2. April 8th-July 20th, the number of days in the past. May and July are big months, with 3 1 day, which should be 2*3 1=62 days, 4.8-5. 1 * * with 30+ 1-8=23 days, 7.1-.
3: June12-September 10, counting the past days.
6.12-7.1a * * has 30+1-0/2 =19 days, July 3 1 day, August 30 days, 9.1-.
The following year is 4:165438+1October 25th-65438+1October 4th.
11.25-1.30 * * There are 30-25=5 days, 65438+ February is the big month, 3 1 day,1-65433.
I'm already confused. There may be many mistakes in it. For reference only. I'm not good at math. Orz hopes to help you or something.