Japanese calendar for September 2027

Last updated: Oct 9, 2026 13:42 UTC

Date	Day	Old calendar	Rokuyō	Day sign	Solar terms and seasonal days
9/1/27	Wed	8/1	Tomobiki	癸未	Nihyaku-tōka (210th day)
9/2/27	Thu	8/2	Senbu	甲申
9/3/27	Fri	8/3	Butsumetsu	乙酉
9/4/27	Sat	8/4	Taian	丙戌
9/5/27	Sun	8/5	Shakkō	丁亥
9/6/27	Mon	8/6	Senshō	戊子
9/7/27	Tue	8/7	Tomobiki	己丑
9/8/27	Wed	8/8	Senbu	庚寅	Hakuro (White dew) 05:28
9/9/27	Thu	8/9	Butsumetsu	辛卯
9/10/27	Fri	8/10	Taian	壬辰
9/11/27	Sat	8/11	Shakkō	癸巳	Nihyaku-hatsuka (220th day)
9/12/27	Sun	8/12	Senshō	甲午
9/13/27	Mon	8/13	Tomobiki	乙未
9/14/27	Tue	8/14	Senbu	丙申
9/15/27	Wed	8/15	Butsumetsu	丁酉
9/16/27	Thu	8/16	Taian	戊戌
9/17/27	Fri	8/17	Shakkō	己亥
9/18/27	Sat	8/18	Senshō	庚子
9/19/27	Sun	8/19	Tomobiki	辛丑
9/20/27	Mon	8/20	Senbu	壬寅	Start of higan
9/21/27	Tue	8/21	Butsumetsu	癸卯
9/22/27	Wed	8/22	Taian	甲辰
9/23/27	Thu	8/23	Shakkō	乙巳	Shūbun (Autumn equinox) 15:02
9/24/27	Fri	8/24	Senshō	丙午
9/25/27	Sat	8/25	Tomobiki	丁未
9/26/27	Sun	8/26	Senbu	戊申	End of higan
9/27/27	Mon	8/27	Butsumetsu	己酉
9/28/27	Tue	8/28	Taian	庚戌
9/29/27	Wed	8/29	Shakkō	辛亥
9/30/27	Thu	9/1	Senbu	壬子

← August 2027 · October 2027 →

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 September 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.