Formula:
Multiplied by five and divided by four plus nine days, the interval between two months is thirty days. One, two, plus whole and one less, before ten tail in 3578.
Formula decryption:
1, year divisible by 4:
Monthly (1, 3, 5, 7, 9, 1 1) A=0, 0, 1, 2, 4, 5.
Bimonthly (2, 4, 6, 8, 10, 65438+ February B= 1, 1, 2, 3, 4, 5.
2. Year not divisible by 4:
Monthly (1, 3, 5, 7, 9, 1 1) a= 1, 0, 1, 2, 4, 5.
Bimonthly (2, 4, 6, 8, 10, 65438+ February b=2, 1, 2, 3, 4, 5.
3. Single month: (year × 5,25+09+days +A or A) ÷ 60 = quotient+surplus.
Bimonthly: (year × 5,25+39+days +b or b) ÷ 60 = business+profit.
For example:
Example 1: year divisible by 4.
1996 65438+ 10 month 16, (96× 5+96 ÷ 4+9+16) ÷ 60 = 8,49,49 is the ordinal number of sixty. 9 corresponds to Tiangan people, 49 is a branch other than 1 2, and the corresponding branch is "Renzi".
1—65438+February 16:
0 1, (96× 5+96 ÷ 4+9+ 16+0) ÷ 60 = 8+49.
02, (96× 5+96 ÷ 4+9+16+30+1) ÷ 60 = 9 and 20.
03, (96× 5+96 ÷ 4+9+ 16+0) ÷ 60 = 8+49.
04, (96× 5+96 ÷ 4+9+16+30+1) ÷ 60 = 9 and 20.
05, (96× 5+96 ÷ 4+9+ 16+ 1) ÷ 60 = 8+50.
06, (96× 5+96 ÷ 4+9+16+30+2) ÷ 60 = 9+2 1.
07, (96× 5+96 ÷ 4+9+ 16+2) ÷ 60 = 8+5 1 good news.
08, (96× 5+96 ÷ 4+9+16+30+3) ÷ 60 = 9 and 22 are easy to have.
09, (96× 5+96 ÷ 4+9+ 16+4) ÷ 60 = 8+53.
10, (96× 5+96 ÷ 4+9+16+30+4) ÷ 60 = 9 and 23.
1 1, (96× 5+96 ÷ 4+9+ 16+5) ÷ 60 = 8, and the rest are 54.
12, (96× 5+96 ÷ 4+9+16+30+5) ÷ 60 = 9+24 Dinghai.
Note: (96× 5,25+9+16+30+5) ÷ 60 = 9 remainder 24 See Table 24 in 1960s for Ding Hai.
Example 2: Year not divisible by 4
1997 February 16, (97× 5+97 ÷ 4+9+16+30+2) ÷ 60 = 9 The remainder 26,26 is the ordinal number of sixty. 6 corresponds to heavenly dryness, 26 divided by 12, 2 corresponds to ugliness, and 2 corresponds to ugliness.
1—65438+February 16:
0 1, (97× 5+97 ÷ 4+9+16+1) ÷ 60 = 8 and 55.
02, (97× 5+97 ÷ 4+9+16+30+2) ÷ 60 = 9 and 26 are both ugly.
03, (97× 5+97 ÷ 4+9+ 16+0) ÷ 60 = 8+54.
04, (97× 5+97 ÷ 4+9+ 16+30+ 1) ÷ 60 = 9+25.
05, (97× 5+97 ÷ 4+9+ 16+ 1) ÷ 60 = 8+55.
06, (97× 5+97 ÷ 4+9+16+30+2) ÷ 60 = 9 and 26 are both ugly.
07, (97× 5+97÷÷÷4+9+ 16+2) ÷÷??? = 8+56.
08, (97× 5+97 ÷ 4+9+16+30+3) ÷ 60 = 9 and 27 gengyin.
09, (97× 5+97 ÷ 4+9+ 16+4) ÷ 60 = 8 is more than 58.
10, (97× 5+97 ÷ 4+9+16+30+4) ÷ 60 = 9+28 Xinmao.
1 1, (97× 5+97 ÷ 4+9+ 16+5) ÷ 60 = 8 and 59.
12, (97× 5+97 ÷ 4+9+16+30+5) ÷ 60 = 9 and 29.
Precautions:
In the third sentence, "the whole is less than one", 4 is a divisible year, and January is less than the other three years; The fourth sentence embodies the law of big month, that is, August plus 3, 1 1 plus 5, and so on (seven of the twelve months in Gregorian calendar are big months, and five months are small months, that is, one, three, five, seven, eight, ten and twelve are big months, and the other five months are small months).