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May 1991: lunisolar dates, rokuyō, sexagenary days

Day	Wd	Lunisolar	Rokuyō	Kanshi	Terms
1	Wed	M3 D17	Senshō	辛未
2	Thu	M3 D18	Tomobiki	壬申	88th night
3	Fri	M3 D19	Senbu	癸酉
4	Sat	M3 D20	Butsumetsu	甲戌
5	Sun	M3 D21	Taian	乙亥
6	Mon	M3 D22	Shakkō	丙子	Rikka (Start of summer) 09:27
7	Tue	M3 D23	Senshō	丁丑
8	Wed	M3 D24	Tomobiki	戊寅
9	Thu	M3 D25	Senbu	己卯
10	Fri	M3 D26	Butsumetsu	庚辰
11	Sat	M3 D27	Taian	辛巳
12	Sun	M3 D28	Shakkō	壬午
13	Mon	M3 D29	Senshō	癸未
14	Tue	M4 D1	Butsumetsu	甲申
15	Wed	M4 D2	Taian	乙酉
16	Thu	M4 D3	Shakkō	丙戌
17	Fri	M4 D4	Senshō	丁亥
18	Sat	M4 D5	Tomobiki	戊子
19	Sun	M4 D6	Senbu	己丑
20	Mon	M4 D7	Butsumetsu	庚寅
21	Tue	M4 D8	Taian	辛卯	Shōman (Grain buds) 22:20
22	Wed	M4 D9	Shakkō	壬辰
23	Thu	M4 D10	Senshō	癸巳
24	Fri	M4 D11	Tomobiki	甲午
25	Sat	M4 D12	Senbu	乙未
26	Sun	M4 D13	Butsumetsu	丙申
27	Mon	M4 D14	Taian	丁酉
28	Tue	M4 D15	Shakkō	戊戌
29	Wed	M4 D16	Senshō	己亥
30	Thu	M4 D17	Tomobiki	庚子
31	Fri	M4 D18	Senbu	辛丑

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 1991, with solar terms; 5 taian days and 5 butsumetsu days.