When is Newton's birthday?

At that time, the Gregorian calendar was used in continental Europe and julian calendar was used in Britain. There were several days' differences between the two calendars. So according to julian calendar, Newton's birthday was1642 65438+February 25th. According to the Gregorian calendar, Newton's birthday is1643 65438+1October 4th. The calendar we use now is.

PS: The difference between Gregorian calendar date and julian calendar date.

1582 —— 1699: Gregorian date minus 10 days equals julian calendar date.

1700 year (there is no leap day in Gregorian calendar and one in julian calendar):

February 28th in Gregorian calendar, or February 18 in julian calendar, or the previous date: Gregorian date minus 10 equals julian calendar date.

Gregorian calendar March 1, or julian calendar February 19, or later date: Gregorian calendar date minus 1 1 equals julian calendar date.

170 1 year-1799: the Gregorian date minus 1 1 day equals the date of julian calendar.

1800 (there is no leap day in Gregorian calendar and one in julian calendar):

February 28th in Gregorian calendar, February 17 in julian calendar, or the previous date: Gregorian calendar date minus 1 1 equals julian calendar date.

Gregorian calendar March 1, or julian calendar February 18, or later date: Gregorian calendar date minus 12 equals julian calendar date.

180 1 year-1899: Gregorian date minus 12 days equals julian calendar date.

1900 (there is no leap day in Gregorian calendar and one in julian calendar):

February 28th in Gregorian calendar, or February 16 in julian calendar, or previous date: Gregorian calendar date minus 12 equals julian calendar date.

Gregorian calendar March 1, or julian calendar February 17, or later date: Gregorian calendar date minus 13 equals julian calendar date.

190 1 year -2099: Gregorian date minus 13 days equals julian calendar date.