What is the date of an Aquinox
September 22, 2020: Like a world day - because it is the equinox worldwide
Contents of this page here:
Equinox are the two days of the year on which the light day and night have the same length. “The sun crosses the celestial equator at the equinox, so on this day it is ... at the time of the equinox vertically above the earth's equator. Day and night are then roughly the same length all over the world, "
“The definition is therefore independent of the location of a real observer; the equinoxes occur worldwide at the same point in time, which however corresponds to different times in different time zones. ”wikipedia.
In 2020, on September 22nd at 3:31 p.m. it will be time for the center of the solar disk to cross the celestial equator. This is the case worldwide at the same (real) time. But the time changes from year to year: “Because the average duration of one orbit of the earth around the sun in relation to the spring equinox (tropical year) is about 365.2422 days, almost six hours longer than the duration of the calendar common year with exactly 365 Days, the calendar date of the equinoxes shifts from one common year to the next to a time about six hours later. With the insertion of February 29th in a leap year, the equinox time is around 18 hours earlier than the previous year. ”Wikipedia.
The equinox is the momentwhen the sun crosses the celestial equator during its apparent annual movement on the ecliptic. The points of intersection of the ecliptic and the equator are called the spring and autumn or Aries and Libra points.
Photo: by S.fonsi [CC BY-SA 3.0 or GFDL], via Wikimedia Commons
Advertising: Tips on the equinox
Postcards, a book (99 €!), A BBC documentary and a planetary system
Other astronomical days
March 30th: Not a world day, but nationwide the popular astronomy day
January 7th: Not a world day, but historically almost a day of astronomy
July 5th: No world day but we are in aphelion. And the story of the bikini's birthday is just as untrue as other fake news about July 5th.
- Why are there so many launch accelerators
- Are the Democrats basically lawless?
- What is a social media support service
- Why does the church hate homework
- What is science as a process
- Judaea was attacked during World War II
- What are new products for your browser
- How to clear Google search history
- India overreacts to Pakistan
- What is the name of Android 8 0
- Why do bacteria become immune to antibiotics
- Openly support the Holocaust
- What is metagenomic DNA
- What do you think of me
- What are the results of the binary cleavage
- Can Jews eat mutton?
- Can meditation cause anxiety depression etc.
- Do ketogenic supplements work?
- Why is my brother so weird
- What makes wine sweet or dry?
- Is TCS Holiday Homes a SCAM
- Is the gravity scale unchangeable
- How is Ed Sheeran a tenor
- Future technology is harmful to humans