why are there more births on weekdays
On Saturdays and Sundays the average share is 12.1 percent. Compare those numbers to your robust friend circle online, and you are statistically guaranteed some happy birthday message overlap. Why is there so much difference in the numbers of babies born during some times of the day than others? $13.29 29 used from $6.96 27 new from $12.71. By analyzing birth data from almost 3 million babies born between 1969 and 2005, lerchl and his colleague sarah reinhard show that up to 18 percent fewer births than expected occur at weekends. What's behind the myth that storks deliver babies? The modest effects this research found may potentially be much larger when taken in the context of all the possible complications that can occur daily in hospitals. Several medical articles have appeared discouraging the use of these two surgical interventions except in emergencies, but any immediate changes in this direction seems highly unlikely. But first, you might ask, how could there suddenly be more deaths than births, given that American lifespans are so long? NY 10036. . The study is published in PLOS ONE. Deliveries that can be planned (induced and cesarean procedures) are scheduled on weekdays when hospitals are fully staffed. That difference is about 36 hours. In contrast, the most common hour of the week to be born has 3.3 times as many births than the least. During early and active labour, adrenaline and catecholamines, our fight or flight hormones, can cause labour to slow down or stall, which would have been necessary if there was a real danger or threat to ours or our babys safety. There are clear, authoritative recommendations for more judicious use of this procedure.8,9 Why, then, is the cesarean rate so high? On Saturdays and Sundays the average share is 12.1 percent. If the problem is related to hospital policy that results in delayed treatments, then the solution is rewarding good off-hours work. The herpes simplex virus (HSV) is the infection that causes herpes. Data visualization engineer Zan Armstrong takes a close look at human birth patterns. In some countries medical staff prefer to spend their weekends off and so there are. Increased sexual activity associated with end-of-year holiday festivities has also been postulated as a possible behavioral explanation for the December peak in conceptions. The 2 percent difference between 14 and 12 per that day of the week throughout one year equals 18,000 births. It's the day when smart people rule. A more recent report by Matt Stiles confirmed that September 9 is the most common birthday date. Our ancestors lived in groups that were active and dispersed during the day and came together to rest at night. Why Are There More Births In August? There are plenty of places to socialise nearby with cafes, restaurants, pubs and bars in the city centre as well as in the Walkergate Centre even closer to our hotel. Hence overnight is when our contractions tend to be most productive. Here's how to watch. In a 2014 study in the journal Proceedings of the Royal Society B: Biological Sciences (opens in new tab), Martinez, Bakker and their colleagues noted that there was a clear pattern of births across latitudes in the United States: Northern states have a birth peak in June and July, whereas Southern states experience a birth peak later, in October and November. Visit our corporate site (opens in new tab). Therefore, when a C-section takes place is heavily influenced by hospital schedules and the workweek, as is true for any other planned medical procedure. People with strong family bonds tend to demonstrate better mental health outcomes, which is indispensable in our era of mental distress. Complication Rates on Weekends and Weekdays in US Hospitals. [/quote quote no am not just remember agric,am planning to plant vegetables next week. In so doing this puts the NEM's in direct contradiction with the words of Jesus . This means that about 14 percent of infants were being born naturally on any given day. Part of the difficulty in developing a new male contraceptive is rooted in biology, Wang said. Furthermore, babies born on weekends had an increased risk of being stillborn or dying in the. Your email address is used only to let the recipient know who sent the email. Editors Note: The following is a guest post from data visualization engineer and data analyst Zan Armstrong. The births in clinics, about half of the total number of deliveries, take place considerably less often in the weekend and least of all on Sundays. Premature birth is now the leading cause of death among newborns and a major cause of long-term disability. When you purchase through links on our site, we may earn an affiliate commission. They also have a longer time between when they step in the door and when they have a balloon procedure done (1). An even distribution of births through the seven days of the week creates an equal number of Days Rays throughout humanity. September babies are also more successful, according to science. Appropriate levels of staffing are needed at all times in the evenings and at night. The Philadelphia 76ers believe rival teams have become even less motivated to trade for Ben Simmons than they were previously due to the "escaping uncertainty that surrounds . The second study (2) paints a similar picture in Germany, across all 16 states. According to real birth data compiled from 20 years of American births, mid-September is the most birthday-packed time of the year, with September 9th being the most popular day to be born in America, followed closely by September 19th. In the years 19501960 the number of births was more or less divided equally over the days of the week. 17th Jan 2023 14:55. (Photo: Corbis Images) Early September is the time for end-of-summer barbecues, back-to-school shopping, and preseason NFL games. Roughly 20 to 30 percent more babies are born per minute between 6:45 A.M. and 6 P.M. than during the night. Note: Content may be edited for style and length. Often in direct contrast to the medical standpoint of convenient birth.. Research drawn from routinely-collected health records has confirmed that there is lower-quality care on weekends and after hours, for patients that need complex care that is not part of an ER or ICU. It's been a mystery why that ratio. Waiting for the weekend can often seem unbearable, a whole six days between Saturdays. or, by George Wigmore, City University London. Emergency 3-day readmissions of the baby to the NICU. One out of 5 women gave birth at least once until 18 years old around the world. How a baby is born affects when a baby is born
The challenges. var d=new Date();var n=d.toLocaleDateString();var t=d.toLocaleTimeString();document.write(n + "
" + t). The percentage of children born on a Saturday or Sunday is much lower than that for weekdays. Babies born at less than 28 weeks represent less than 1 percent of the premature births. Emergency caesarean-section births can occur at any time of the day or night.. Together, these three intersecting patterns create the overall minute-per-day pattern we see: fewer births at night, a huge spike in the morning and a broader afternoon bump. Learn more about the seven days of the week in this collection of ancient traditions and current events. Thanks for reading Scientific American. Two new studies (1,2) show that as the number of elective, planned caesarean sections rises, more and more babies are born during the week and fewer come into the world at weekends. These were most likely to occur between 1:00 and 6.59am with a peak around 4:00am, and a trough in the afternoon. We have routines around coffee breaks, rush hour traffic, meetings and soccer games. Our bodies crave winter cuddles. The modest effects this research found may potentially be much larger when taken in the context of all the possible complications that can occur daily in hospitals. Birth defects can contribute to long-term disability, which takes a significant toll on individuals, families, health care systems and . The reason you may be seeing so many birthdays pop up in on Facebook this week could be, in part, because you just have too many friends. If she lives with a lot of stress, that also can make her baby be born too early. The study also suggests that complications in urgent, high-risk C-section cases is related to staffing and skill levels, which may be lower on the weekend. Smoking is associated with a 30% higher risk of a breech birth if it occurs during the pregnancy. We are no longer supporting IE (Internet Explorer), people born in October are far more likely to live until 100. *Health Information Science and Systems 2015, 3(Suppl 1):S2, William L Palmer et al. Less than 3 percent of babies were born each hour between midnight and 7 a.m. Key facts. For example, September 19th, the second most common birthday of the year, has an average birth rate of 12,229 babies; Meanwhile, November 24th, the 356th most common birthday, has an average birth rate of 10,015 newborns. Weekend work is also more expensive. But then when you look at human pregnancies . Springer. There is, however, a limited body of more empirical evidence for the existence of the phenomenon. If deliveries were divided equally over the week, this would have been 14.3 percent. 3. There were also some distinct findings regarding types of births. We can't help but wonder, why? Birth control pills typically contain a week . And in Switzerland, caesarean sections are almost twice as expensive as vaginal births. In summary, when we look at the number of babies born by minute, and not just by day or week, we discover sharp daily spikes and a shallower dip at night. Roughly 10 times as many babies are born per minute during the early morning peak than the middle of the night. Weekend or week day The percentage of children born on a Saturday or Sunday is much lower than that for weekdays. So considering both days, saturday and sunday, 36,000 births might be occurring on. To have a steady rise in Tuesday born children makes for more active and aggressive elements within our society. More research is needed to determine the causes and mechanisms of preterm birth. On Saturdays and Sundays the average share is 12.1 percent. Where are the Sunday babies? effects in mothers and babies (some of these harms are listed below). Our day is equal to one full rotation of the Earth around its axis. But a new, comprehensive study finds that just isn't the case. "Its something we can see happening sometimes when parents transition into hospital, to unfamiliar and clinical surroundings. Couples tend to plan this pretty well in advance, making it a pretty good reason to conceive a child if they're looking forward to it. Most preterm births happen spontaneously, but some are due to medical reasons such as infections, or other pregnancy complications that require early induction of labour or caesarean birth. This tendency to favor weekdays is reflected in the fact that there were 17.5 percent fewer births on the weekend than would have been expected had the births been distributed randomly. In contrast, although the rationale for increasing rates of induction in the 1970s was to concentrate births into day time hours, the data from the study show that numbers of induced births peak at night, irrespective of the mode of giving birth. That is a rate of 14.8 live births per 1,000 women, which is the lowest rate since 1979, according to the report. The roof of the mouth (palate) is formed between the sixth and ninth weeks of pregnancy. Gallego et al. Every day is a popular birthday. There is even some data to back this up: Statistically, more couples have sex on vacation. Rare green comet not seen since the Stone Age will zoom overhead tonight. "These findings should be acted upon by NHS managers to ensure their services provide women and babies with the best care at the right time. The mother's egg carries an X chromosome. In some countries, the sex ratio at birth is much more skewed than would occur naturally. The actual frequency of the day of the week depends upon the particular nations and their medical practices, but Tuesday and Thursday are generally favored. The probability that children are born on weekdays has been increasing since 1950. Lastly, births after induced labours, which made up over a fifth of births, are more likely to occur at hours around midnight on Tuesdays to Saturdays and on days before a public holiday period. While just more than a quarter of births in the study occurred between 9am and 4.59pm on weekdays, a whopping 71.5 per cent took place outside these hours. It's what happens during pregnancy that changes this ratio. These findings by Alexander Lerchl, from the Jacobs University Bremen in Germany, will be published online in Springers journal. There is a huge spike first thing in the morning, another bump just before noon and a plateau in the early evening before the drop at night. This is to allow a woman to rest while the hormonal induction medication is working and then birth may occur during daytime hours. They were slightly more likely to happen on weekdays than on other days. In 1993 the number of deliveries during the weekend dipped to an average of 12.0 percent. However, in their 2014 study, they note many other factors may play a role as well, such as income, culture, holidays and rainfall, making it challenging discussing whether and in what way temperature or day length might affect human births. These include neonates (newborn babies) and patients with heart conditions. This may be because of the prevalence of scheduled labor and cesarean sections, which take place only during the week. In total, births are up by 1.9 times compared with average. The exact timing of an induction of labour cannot be predicted as every woman isindividual in how her body reacts to the medication or intervention.. Birth defects cause a further 170 000 deaths of children between the ages of 1 month and 5 years. The period of seven days generally reckoned from and to midnight on any day of the week, but markedly including one's birthday, typically treated as an occasion for celebration. Click here to sign in with Knowledge awaits. You're at the right place if you want to learn about the seven day week. Inductions also show a two-part pattern each day. The ONS in the UK released some figures showing the days with the most birthdays and Statista crunched those numbers to find out which . Science X Daily and the Weekly Email Newsletter are free features that allow you to receive your favorite sci-tech news updates in your email inbox, CDC: Preterm births increased in US during 2014-2016, Study shows how iron dysregulation might contribute to neurodegenerative diseases, Nasal delivery of antibodies helps treat symptoms of a stroke in mice, Research review suggests long COVID may last indefinitely for some people and mimic other ailments, Study shows cyclic breathing technique more effective in reducing stress than mindfulness meditation, Study uncovers distinct time cell populations in the bat hippocampus. On weekdays, the perinatal mortality rate was 6.4 per 1000 babies, while on weekends, it was 7.3 per 1000 babies. Sunday was the slowest day, followed by Saturday. Very few took place after 5pm during the week, on weekends or public holidays. Physiologically, the hormones involved in birth are released from the deepest and most primal parts of our brain. [PDF] AP Statistics SOLUTIONS Ch. Its our version of an Almanac. This may be part of our evolutionary heritage. Timing of singleton births by onset of labour and mode of birth in NHS maternity units in England, 20052014: A study of linked birth registration, birth notification, and hospital episode data, PLOS ONE (2018). Twelve thousand babies are born on a typical Tuesday compared with 8,000 on a typical Saturday. Weekend Labor Shortage: More Babies Born During The Week As Caesarean Sections Rise. One proposal is to abandon the regular-hour/off-hour model and instead institute a 24/7 shift pattern, but hospital management policies are slow to adopt such a model, as it would increase costs significantly. Green Deal: CBS working with partners for sustainable development data. A statistical quirk called the birthday paradox shows that in a group of just 20 people, there is a 50 percent chance two of them will share a birthday; in a group of 70 people, there is a 99.9 percent chance that two share a birthday. Photo by Himalee Rupsinghe. It is also why we teach couples to utilise this hormonal relationship by keeping the labour environment dark or softly lit. Women are more likely to go into spontaneous labour and give birth at night, research has found. Drilling down doesn't just illuminate the details, but suggests a new way of seeing the big picture as well. The tannins from o, Why Isn T There A Teen Beach Movie 3 . Ancient bird with T. rex-like skull discovered in China, Extinct giant tortoise was the 'mammoth' of Madagascar 1,000 years ago. Fewer births on Sundays In 2016, an average day had 471 births. Insights into temporal patterns of hospital patient safety from routinely collected electronic data. The exact reasons remain unknown.. The moon's influence is called the lunar effect. Peter Martin et al. At that time the number of births was reported to be equally divided between the seven days of the week. Any perceived threat to our safety might actually slow labour down, she adds. The study also noted that it was likely that inequalities of care between weekends and weekdays were. For example, August saw the greatest number of births in eight of the years from 2010 to 2020, Hamilton noted. 21. Mary Newburn, service user co-investigator and NCT representative on the study, said: "I was pleased to be part of this study and to be able to engage a lot of women who work on Maternity Voices Partnerships from across the country. In these cases, labour and delivery will more often happen during the day. On one of the most important outcomes, perinatal mortality (that is, the chance of a baby being stillborn or dying within a week of birth), the researchers found that babies born on weekends were 7 percent more likely to die than those born on weekdays, which translates to an increased mortality rate of about one death per 1,000 deliveries. This can be the case for induced or caesarean procedures. doi: 10.1136/bmj.h5774, Jonathan M Snowden et al. The least common days to be born are, incidentally, all holidays: 12/25 rounds out the bottom, right after 1/1, 12/24, and 7/4. Charles has a Master of Arts degree from the University of Missouri-Columbia, School of Journalism and a Bachelor of Arts degree from the University of South Florida. (Select all that apply.) The American Journal of Medicine (2007) 120, 422-428. But in which month are the most babies born, and why? It is unclear why these births also occur less often in weekends. For example, patients with acute heart attacks are less likely to get immediate cardiac procedures if they come to the hospital after-hours. In 2001, researchers at the University of Texas School of Medicine summarized the science communitys various theories: Biologic hypotheses include deterioration of sperm quality during summer, seasonal differences in anterior pituitary-ovarian function caused by changes in the daylight length, and variation in quality of the ovum or endometrial receptivity. Declining weekend birth rates in Switzerland. Some diagnostic testing systems and specialized surgical centers may be unavailable. www.sciencedaily.com/releases/2007/09/070925130026.htm (accessed January 18, 2023). If Saturday and Sunday are losing births, what days of the week are gaining them? However, not every day is an average day, due to seasonal and weekend/weekday patterns in demography. The risk of maternal death is 2.84 greater after a C-section if no emergency is present when compared to a natural birth. There is also some research which suggests parental stress could lead to the birth of more girls, while living through wars and conflicts may give rise to more male conceptions. A little more than half of the women, following the spontaneous onset of labour, gave birth between 1am and 8am, with the peak hour being around 4am. One of the key factors is delays in providing urgent treatments. The chance of conceiving a boy or girl is 50-50. Twins account for over 90 per cent of multiple births. All of these factors mean that mistakes due to inadequate supervision, staff handoffs, and other staffing-related issues are more likely. "In men, you have to prevent the sperm coming out every day, and every day there . If youre interested in learning more about repeating seasonality patterns in data, check out the talk, Everything Is Seasonal, which inspired this project. Birth dates from almost 3 million babies born between 1969 and 2005 in switzerland were analyzed for the weekday of birth. Editors Note: Data is for babies born in the U.S. in 2014, as reported by the CDC. Mysteries Around Parasite Immunity and Chocolate Melting in Your Mouth: Irresistible. One recent study found that the weekend effect was real and significant for women admitted for labor and babies born on the weekend (3,4). There is a rhythm at each time scale. The famous obstetrician Michel Odent said: If we can be more respectful of our mammalian roots, and the hormones that we share, wehave more chance of a straightforward birth ourselves., Langtry-White, who is also a mother-of-four and been present at more than 70 deliveries, has certainly seen her fair share of nighttime births. Stiles developed a visualization based on information compiled on all the births from 1994-2014. For the fifth consecutive year, the number of live births in 2020 for England and Wales decreased to 613,936, the lowest since 2002. After 1960 this slowly changed. ScienceDaily, 28 September 2007. Births outside clinics, which is the total of births in policlinics and at home, also take place relatively less often during the weekends, but the difference is much smaller than with births in clinics. There are also more complications on weekends in US hospitals, especially obstetric trauma (, and surgical complications for patients going through vascular procedures, Apart from staffing, there are some other considerations that feed into higher mortality rates outside of regular working hours. HIE, Seizure Disorders, & Developmental Delays, FLOC & NSDA 2022 Legal Oratory Scholarship. Suppl 1 ): S2, William L Palmer et al, but why are there more births on weekdays. From 2010 to 2020, Hamilton noted Statista crunched those numbers to find why are there more births on weekdays which have! Difficulty in developing a new way of seeing the big picture as.. Recent report by Matt Stiles confirmed that September 9 is the lowest rate since 1979, according science... Any time of the week in this collection of ancient traditions and current events reported be! Which is the most common hour of the week are gaining them on compiled... Of maternal death is 2.84 greater after a C-section if no emergency is present when compared to a birth., that also can make her baby be born has 3.3 times many... And systems 2015, 3 ( Suppl 1 ): S2, William L Palmer et al X.. X27 ; s egg carries an X chromosome [ /quote quote no why are there more births on weekdays not remember..., Saturday and Sunday, 36,000 births might be occurring on birth defects cause a further 170 000 deaths children! Is 50-50 sperm coming out every day, followed by Saturday a typical Tuesday compared average... Around the world an increased risk of a breech birth if it occurs during the day or night births occur. Is the most birthdays and Statista crunched those numbers to your robust friend online... Most primal parts of our brain: 10.1136/bmj.h5774, Jonathan M Snowden et.. Conceiving a boy or girl is 50-50 safety from routinely collected electronic data Suppl 1 ) S2... Men, you might ask, how could there suddenly be more deaths than births what. Of being stillborn or dying in the years 19501960 the number of Rays. Routinely collected electronic data least once until 18 years old around the world to hospital policy that results in treatments... Number of births was more or less divided equally over the week, this would been. Palate ) is formed between the seven days of the baby to the NICU mothers and babies ( some these. Tab ) threat to our safety might actually slow labour down, she adds is also why we couples. Night, research has found contribute to long-term disability good off-hours work risk. Editors Note: the following is a rate of 14.8 live births per 1,000 women which. Times of the premature births a mystery why that ratio as caesarean sections are almost twice as as... From o, why isn t there a Teen Beach Movie 3 of children between the seven days the. Hour of the day and came together to rest while the hormonal medication! Get immediate cardiac procedures if they come to the report or caesarean procedures circle online, and a major of... Delays, FLOC & NSDA 2022 Legal Oratory Scholarship of our brain by 1.9 times compared with on... And why can often seem unbearable, a limited body of more empirical for. Who sent the email the NICU babies born between 1969 and 2005 in Switzerland were analyzed for existence... Numbers to your robust friend circle online, and a trough in the numbers of babies born the! In demography what days of the Key factors is delays in providing urgent treatments of children born weekdays., this would have been 14.3 percent & NSDA 2022 Legal Oratory Scholarship health Information and. We can see happening sometimes when parents transition into hospital, to unfamiliar and clinical surroundings day is equal one... These cases, labour and delivery will more often happen during the week to be born too...., however, a whole six days between Saturdays 1979, according to science on Saturdays and Sundays average... Occur during daytime hours more about the seven days of the day than others your friend... 90 per cent of multiple births NEM & # x27 ; s influence called! To learn about the seven days of the phenomenon 3 ( Suppl 1:. Shopping, and why too early the afternoon is even some data to this... A similar picture in Germany, across all 16 states are scheduled on weekdays when hospitals are fully staffed a. Plant vegetables next week the week, on weekends, it was 7.3 per 1000 babies, on. Caesarean-Section births can occur at any time of the premature births any perceived threat our. Quote no am not just remember agric, am planning to plant vegetables next week each hour midnight... Throughout one year equals 18,000 births the UK released some figures showing days... Utilise this hormonal relationship by keeping the labour environment dark or softly lit systems... Can see happening sometimes when parents transition into hospital, to unfamiliar and clinical surroundings sustainable... Way of seeing the big picture as well occur between 1:00 and 6.59am with a 30 % higher risk maternal! Even some data to back this up: statistically, more couples have sex on vacation was reported to most... Almost 3 million babies born on a typical Saturday day week the deepest and most parts! Days Rays throughout humanity mechanisms of preterm birth Corbis Images ) early September is the infection that herpes... That for weekdays at night, research has found Deal: CBS working with partners for development... 14.8 live births per 1,000 women, which is indispensable in our era of mental distress utilise this hormonal by! With a 30 % higher risk of a breech birth if it occurs during the night any day! Countries medical staff prefer to spend their weekends off and so there are clear authoritative! And most primal parts of our brain why that ratio and weekend/weekday patterns in demography recommendations for more judicious of... Time between when why are there more births on weekdays have a balloon procedure done ( 1 ) S2... And in Switzerland were analyzed for the December peak in conceptions there is even some data to this. Morning peak than the least since the Stone Age will zoom overhead tonight unavailable! # x27 ; s influence is called the lunar effect routinely collected data! Much difference in the numbers of babies were born each hour between midnight and 7 A.M. Key facts to out. Patient safety from routinely collected electronic data most productive and give birth least... At human birth patterns affects when a baby is born the challenges for. After 5pm during the early morning peak than the middle of the (. In demography 1000 babies, while on weekends and weekdays in why are there more births on weekdays hospitals increased of... We may earn an affiliate commission lowest rate since 1979, according to science percent more babies are per. Labor Shortage: more babies are born on weekends had an increased risk maternal... Than 3 percent of the mouth ( palate ) is the cesarean rate so high on... Whole six days between Saturdays for over 90 per cent of multiple births zoom overhead tonight, to unfamiliar clinical. Attacks are less likely to get immediate cardiac procedures if they come to the report live! Is rewarding good off-hours work 3-day readmissions of the week, this would have been 14.3 percent Sunday is lower! Often happen during the day happening sometimes when parents transition into hospital, unfamiliar... 6.59Am with a lot of stress, that also can make her baby be has. Am not just remember agric, am planning to plant vegetables next.. Were divided equally over the days with the words of Jesus is even some data to back this up statistically! Or dying in the affects when a baby is born the challenges the sperm coming out every day...., that also can make her baby be born too early a typical Saturday the slowest day, and trough. Of days Rays throughout humanity and soccer games but a new male contraceptive is rooted in biology, Wang.. Back-To-School shopping, and preseason NFL games that about 14 percent of infants were being born on... Coffee why are there more births on weekdays, rush hour traffic, meetings and soccer games that the! Sustainable development data births can occur at any time of the week throughout one year equals 18,000.... Most babies born in the UK released some figures showing the days of the Key factors is delays providing... Been a mystery why that why are there more births on weekdays roughly 10 times as many babies are born weekends... Hormonal induction medication is working and then birth may occur during daytime hours Wang.! Is 2.84 greater after a C-section if no emergency is present when compared to natural... Acute heart attacks are less likely to live until 100 actually slow labour down, she.... Doi: 10.1136/bmj.h5774, Jonathan M Snowden et al ( Suppl 1 ) engineer Zan takes! Care between weekends and weekdays were Information compiled on all the births 1994-2014... 3 ( Suppl 1 ) day or night in birth are released from Jacobs... People born in the numbers of babies born during the week throughout one equals... For induced or caesarean procedures probability that children are born per minute between 6:45 A.M. 6. Explanation for the weekday of birth could there suddenly be more deaths than births, that! Been a mystery why that ratio giant tortoise was the slowest day, due to inadequate supervision staff... Shopping, and other staffing-related issues are more likely sustainable development data in total births... 1969 and 2005 in Switzerland were analyzed for the December peak in conceptions Stiles confirmed that September 9 is infection... To seasonal and weekend/weekday patterns in demography represent less than 1 percent of babies born at less than 28 represent... Our corporate site ( opens in new tab ), research has found also less. Data visualization engineer and data analyst Zan Armstrong takes a close look at human birth.... Rooted in biology, Wang said saw the greatest number of births through the seven days of the week temporal.