Japanese AlmanacJapanese calendar for May 2027
Last updated:
| Date | Day | Old calendar | Rokuyō | Day sign | Solar terms and seasonal days |
|---|---|---|---|---|---|
| 5/1/27 | Sat | 3/25 | Senbu | 庚辰 | |
| 5/2/27 | Sun | 3/26 | Butsumetsu | 辛巳 | Hachijū-hachiya (88th night) |
| 5/3/27 | Mon | 3/27 | Taian | 壬午 | |
| 5/4/27 | Tue | 3/28 | Shakkō | 癸未 | |
| 5/5/27 | Wed | 3/29 | Senshō | 甲申 | |
| 5/6/27 | Thu | 4/1 | Butsumetsu | 乙酉 | Rikka (Start of summer) 02:25 |
| 5/7/27 | Fri | 4/2 | Taian | 丙戌 | |
| 5/8/27 | Sat | 4/3 | Shakkō | 丁亥 | |
| 5/9/27 | Sun | 4/4 | Senshō | 戊子 | |
| 5/10/27 | Mon | 4/5 | Tomobiki | 己丑 | |
| 5/11/27 | Tue | 4/6 | Senbu | 庚寅 | |
| 5/12/27 | Wed | 4/7 | Butsumetsu | 辛卯 | |
| 5/13/27 | Thu | 4/8 | Taian | 壬辰 | |
| 5/14/27 | Fri | 4/9 | Shakkō | 癸巳 | |
| 5/15/27 | Sat | 4/10 | Senshō | 甲午 | |
| 5/16/27 | Sun | 4/11 | Tomobiki | 乙未 | |
| 5/17/27 | Mon | 4/12 | Senbu | 丙申 | |
| 5/18/27 | Tue | 4/13 | Butsumetsu | 丁酉 | |
| 5/19/27 | Wed | 4/14 | Taian | 戊戌 | |
| 5/20/27 | Thu | 4/15 | Shakkō | 己亥 | |
| 5/21/27 | Fri | 4/16 | Senshō | 庚子 | Shōman (Grain buds) 15:18 |
| 5/22/27 | Sat | 4/17 | Tomobiki | 辛丑 | |
| 5/23/27 | Sun | 4/18 | Senbu | 壬寅 | |
| 5/24/27 | Mon | 4/19 | Butsumetsu | 癸卯 | |
| 5/25/27 | Tue | 4/20 | Taian | 甲辰 | |
| 5/26/27 | Wed | 4/21 | Shakkō | 乙巳 | |
| 5/27/27 | Thu | 4/22 | Senshō | 丙午 | |
| 5/28/27 | Fri | 4/23 | Tomobiki | 丁未 | |
| 5/29/27 | Sat | 4/24 | Senbu | 戊申 | |
| 5/30/27 | Sun | 4/25 | Butsumetsu | 己酉 | |
| 5/31/27 | Mon | 4/26 | Taian | 庚戌 |
Method
Solar terms are the moments the Sun’s apparent ecliptic longitude reaches multiples of 15°, computed with Skyfield and the JPL DE421 ephemeris and given in Japan Standard Time. Old-calendar months begin on the JST date of each new moon; the month containing the winter solstice is month 11, and in a year with 13 months the first month without a principal term is the leap month. Rokuyō follow (month + day) of the old calendar; day signs follow the 60-day cycle. Seasonal days use the conventional definitions (e.g. setsubun = the day before risshun, hachijū-hachiya = the 88th day counting risshun as day 1). Dates were cross-checked against the National Astronomical Observatory of Japan’s published calendar.
About this page
Old calendar, rokuyō and solar terms for each day of May 2027 (Japan time).
Rokuyō are a traditional calendar notation still printed on Japanese calendars. They have no scientific basis; this site lists them only as a calendar convention.