Japanese calendar for January 2027

Last updated: Oct 9, 2026 13:42 UTC

Date	Day	Old calendar	Rokuyō	Day sign	Solar terms and seasonal days
1/1/27	Fri	11/24	Butsumetsu	庚辰
1/2/27	Sat	11/25	Taian	辛巳
1/3/27	Sun	11/26	Shakkō	壬午
1/4/27	Mon	11/27	Senshō	癸未
1/5/27	Tue	11/28	Tomobiki	甲申	Shōkan (Minor cold) 23:10
1/6/27	Wed	11/29	Senbu	乙酉
1/7/27	Thu	11/30	Butsumetsu	丙戌
1/8/27	Fri	12/1	Shakkō	丁亥
1/9/27	Sat	12/2	Senshō	戊子
1/10/27	Sun	12/3	Tomobiki	己丑
1/11/27	Mon	12/4	Senbu	庚寅
1/12/27	Tue	12/5	Butsumetsu	辛卯
1/13/27	Wed	12/6	Taian	壬辰
1/14/27	Thu	12/7	Shakkō	癸巳
1/15/27	Fri	12/8	Senshō	甲午
1/16/27	Sat	12/9	Tomobiki	乙未
1/17/27	Sun	12/10	Senbu	丙申	Start of doyō 17:46
1/18/27	Mon	12/11	Butsumetsu	丁酉
1/19/27	Tue	12/12	Taian	戊戌
1/20/27	Wed	12/13	Shakkō	己亥	Daikan (Major cold) 16:30
1/21/27	Thu	12/14	Senshō	庚子
1/22/27	Fri	12/15	Tomobiki	辛丑
1/23/27	Sat	12/16	Senbu	壬寅
1/24/27	Sun	12/17	Butsumetsu	癸卯
1/25/27	Mon	12/18	Taian	甲辰
1/26/27	Tue	12/19	Shakkō	乙巳
1/27/27	Wed	12/20	Senshō	丙午
1/28/27	Thu	12/21	Tomobiki	丁未
1/29/27	Fri	12/22	Senbu	戊申
1/30/27	Sat	12/23	Butsumetsu	己酉
1/31/27	Sun	12/24	Taian	庚戌

← December 2026 · February 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 January 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.