LPH submitted a new blog post
Many countries celebrate the start of a new year, based on the Gregorian calendar. This was not always the case. England and its colonies didn't switch to the Gregorian calendar until 1752. NASA provides an excellent summary of the different calendars.
- Julian calendar, established by Julius Caesar in the year 46 BCE
- The tropical year is approximately 365 days 5 hours 48 minutes, and 46 seconds (365.242199 days)
- By 1572, Easter was being celebrated too early, relative to the vernal equinox.
- Gregory XIII designated that October 4, 1582 would be officially followed by October 15, 1582.
- Great Britain decreed that September 2, 1752 would be followed by September 14, 1752.
- Prior to the Gregorian calendar, March 25 was the new year but once the new calendar was implemented, it became January 1 for many countries.
- The Gregorian Calendar is the calendar used in the international standard for Representation of dates and times.
- Astronomers continue to use the Julian Calendar.
Continue reading the Original Blog Post.