Conversion of Lunar Calendar, julian calendar and Gregorian Calendar

Quote the 39 th floor of Jinsha Yangfei

Julian calendar → Gregorian calendar

March 0-February 100 revised value: -2 (2 days in advance)

March100-February 200. Modified value:-1 (1 days later)

March 200-February 300 A.D. Revised value: 0.

March 300-February 400:+1 (backward 1 day)

March 400- February 500:+1 (backward 1 day)

Revised value from March 500 to February 600: +2 (2 days backward)

March 600-February 700, revised value: +3 (3 days backward)

March 700-February 800, revised value: +4 (4 days backward)

March 800-February 900, revised value: +4 (4 days backward)

March-February, 900 1000 Revised value: +5 (5 days backward)

A.D.1March 000-A.D.1February 00 Revised value: +6 (6 days backward).

A.D.11March 00-A.D.1February 200 Revised value: +7 (7 days backward)

March1200-February 1300 revised value: +7 (7 days backward)

March1300 —— February 1400 correction: +8 (8 days backward).

March1400-February 1500 revised value: +9 (9 days backward)

March1500-June 1582 revised value:+10 (backward 10 days).

Before 1582, only people born in the 3rd century AD did not need to add dates. Before the 3rd century, their birthdays had to be shortened.