Calculation method of accurate time in beginning of spring

I. calculation formula: [Y*D+C]-L

Interpretation of the formula: the last two digits of the number of years are multiplied by 0.2422 plus 3.87, and the whole number is subtracted from the number of leap years. 2 1 century c value =3.87, and in the 22nd century c value =4. 15.

For example, the calculation steps of beginning of spring date in 2058 are [58× .0.2422+3.87]-[(58-1)/4] =17-14 = 3, so beginning of spring date is February 3.

II. The exact time from 20 13 to 2030 in beginning of spring:

201300:13: 25 February 4th, beginning of spring.

20 14 February 04 06: 03 beginning of spring time:15.

2015 February 4th beginning of spring time 1 1:58:27.

2016 February 4th, beginning of spring time 17:46:00.

2017 February 3rd 23: 34: 0 beginning of spring time1.

2018 05: 28: 25 February 4th, beginning of spring season.

2019 February 4th beginning of spring time11:14:14.

February 4, 2020 beginning of spring time 17:03: 12.

2021February 3, 22:58:39 beginning of spring time.

February 4, 2022 04:50:36 beginning of spring.

February 4, 2023 beginning of spring time 10:42:2 1.

February 4, 2024 beginning of spring time 16:26:53.

February 3, 2025 beginning of spring time 22: 10: 13.

February 4, 2026, 04:0 1:5 1 beginning of spring time.

February 4, 2027 09:46:00 beginning of spring.

February 4, 2028 beginning of spring time 15:30:53.

February 3, 2029 beginning of spring time 2 1:20:25.

03:08:04 beginning of spring time on February 4th, 2030.

I hope it helps you.