Earth is estimated to be 4.54 billion years old, plus or minus about 50 million years. Scientists have scoured the Earth searching for the oldest rocks to radiometrically date. What is the actual year of Earth? By using not only the rocks on Earth but also information gathered about the […]
In astronomy, the Julian year is a unit of time; it is defined as 365.25 days of exactly 86,400 seconds (SI base unit), totalling exactly 31,557,600 seconds in the Julian astronomical year.Summary. Days Year type 365.2425 Gregorian, on average. 365.25 Julian. 365.25636 Sidereal, for epoch J2000.0. What is a 365 […]
April 2017 is an aberration. It spreads across 6 calendar weeks. So is July, so maybe not so rare. Can a month has 6 weeks? All the months in the calendar have 4 complete weeks because every month has at least 28 days. A few months have some extra days, […]
Simply put, a teenager’s brain is not ready to learn at 6 a.m. That’s why it is typical for teenagers to sleep late on weekends. Their brains’ developmental time does not start until 10 or 11 in the morning. What time does students brain start working? That said, science has […]
To determine how many weeks elapsed between two dates, we can use a simple formula to find the number of days between the dates, then divide by 7. The formula will return a decimal number. How do you calculate weeks from days? To convert a day measurement to a week […]
When kids are sleep-deprived their brains actually lapse into sleep-like brainwave patterns, which is why tired kids space out during class. They’re more distracted, they may make more careless errors, and they have a hard time focusing on class assignments and tests. How does sleep affect students performance in school? […]
For centuries the Romans used a period of eight days in civil practice, but in 321 CE Emperor Constantine established the seven-day week in the Roman calendar and designated Sunday as the first day of the week. Did the 7 day week come from the Bible? While the seven-day week […]
Teens need more sleep because their bodies and minds are growing quickly. Scientific research shows that many teens do not get enough sleep. To be at your best, you need between 8 and 10 hours of sleep every day. While you might not always be able to get this much, […]
Why are there 12 months in the year? Julius Caesar’s astronomers explained the need for 12 months in a year and the addition of a leap year to synchronize with the seasons. At the time, there were only ten months in the calendar, while there are just over 12 lunar […]
The weeks of the year in a Gregorian calendar are numbered from week 1 to week 52 or 53, depending on several varying factors. Most years have 52 weeks, but if the year starts on a Thursday or is a leap year that starts on a Wednesday, that particular year […]
Nodding off in class is common for students of any age. Late nights studying, long hours on a job, sitting in a warm classroom after a big lunch, a long evening class, or simply finding the teacher or subject matter a trifle boring all can contribute to classroom sleepiness. How […]
Chromebooks have a longer battery life. As a result, students and teachers can use Chromebooks for many hours without locating a spot that is close to a power socket. Additionally, learners do not need to worry about their devices running out of power when in the middle of class or […]
With most high schools starting classes at 7:30 a.m., this usually means that teenagers need to be up around 6 a.m., placing their ideal bedtime around 8:45-9:30 p.m. But most teens don’t go to bed until around 11 p.m. to 1 a.m. Which begs the question: If they’re so exhausted […]
According to many studies, later high school start times could potentially influence more than the sleep quality of students; it may result in higher attendance, better performance, and, in turn, better grades and higher graduation rates. Does starting school later lead to better grades? Once the start day was moved […]
The four quarters are added together (1/4+1/4+1/4+1/4=1) to make an extra day every four years. This day is added to the leap year. Therefore, there are 366 days in a leap year.Weeks in a Month Table. Month Days Weeks October 31 days 4 weeks + 3 days November 30 days […]