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May 1980: lunisolar dates, rokuyō, sexagenary days

Day	Wd	Lunisolar	Rokuyō	Kanshi	Terms
1	Thu	M3 D17	Senshō	甲戌
2	Fri	M3 D18	Tomobiki	乙亥	88th night
3	Sat	M3 D19	Senbu	丙子
4	Sun	M3 D20	Butsumetsu	丁丑
5	Mon	M3 D21	Taian	戊寅	Rikka (Start of summer) 17:44
6	Tue	M3 D22	Shakkō	己卯
7	Wed	M3 D23	Senshō	庚辰
8	Thu	M3 D24	Tomobiki	辛巳
9	Fri	M3 D25	Senbu	壬午
10	Sat	M3 D26	Butsumetsu	癸未
11	Sun	M3 D27	Taian	甲申
12	Mon	M3 D28	Shakkō	乙酉
13	Tue	M3 D29	Senshō	丙戌
14	Wed	M4 D1	Butsumetsu	丁亥
15	Thu	M4 D2	Taian	戊子
16	Fri	M4 D3	Shakkō	己丑
17	Sat	M4 D4	Senshō	庚寅
18	Sun	M4 D5	Tomobiki	辛卯
19	Mon	M4 D6	Senbu	壬辰
20	Tue	M4 D7	Butsumetsu	癸巳
21	Wed	M4 D8	Taian	甲午	Shōman (Grain buds) 06:42
22	Thu	M4 D9	Shakkō	乙未
23	Fri	M4 D10	Senshō	丙申
24	Sat	M4 D11	Tomobiki	丁酉
25	Sun	M4 D12	Senbu	戊戌
26	Mon	M4 D13	Butsumetsu	己亥
27	Tue	M4 D14	Taian	庚子
28	Wed	M4 D15	Shakkō	辛丑
29	Thu	M4 D16	Senshō	壬寅
30	Fri	M4 D17	Tomobiki	癸卯
31	Sat	M4 D18	Senbu	甲辰

Computed from the JPL DE421 ephemeris with Skyfield, in Japan Standard Time. The lunisolar dates follow the traditional Tenpō rules for reference only (the leap month around 2033 is disputed). Rokuyō and the sexagenary cycle are calendar customs, not predictions.

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Daily lunisolar date, rokuyō and sexagenary day for May 1980, with solar terms; 5 taian days and 5 butsumetsu days.