Japanese calendar for October 2026

Last updated: Oct 9, 2026 13:42 UTC

Date	Day	Old calendar	Rokuyō	Day sign	Solar terms and seasonal days
10/1/26	Thu	8/21	Butsumetsu	戊申
10/2/26	Fri	8/22	Taian	己酉
10/3/26	Sat	8/23	Shakkō	庚戌
10/4/26	Sun	8/24	Senshō	辛亥
10/5/26	Mon	8/25	Tomobiki	壬子
10/6/26	Tue	8/26	Senbu	癸丑
10/7/26	Wed	8/27	Butsumetsu	甲寅
10/8/26	Thu	8/28	Taian	乙卯	Kanro (Cold dew) 15:29
10/9/26	Fri	8/29	Shakkō	丙辰
10/10/26	Sat	8/30	Senshō	丁巳
10/11/26	Sun	9/1	Senbu	戊午
10/12/26	Mon	9/2	Butsumetsu	己未
10/13/26	Tue	9/3	Taian	庚申
10/14/26	Wed	9/4	Shakkō	辛酉
10/15/26	Thu	9/5	Senshō	壬戌
10/16/26	Fri	9/6	Tomobiki	癸亥
10/17/26	Sat	9/7	Senbu	甲子
10/18/26	Sun	9/8	Butsumetsu	乙丑
10/19/26	Mon	9/9	Taian	丙寅
10/20/26	Tue	9/10	Shakkō	丁卯	Start of doyō 18:13
10/21/26	Wed	9/11	Senshō	戊辰
10/22/26	Thu	9/12	Tomobiki	己巳
10/23/26	Fri	9/13	Senbu	庚午	Sōkō (Frost’s descent) 18:38
10/24/26	Sat	9/14	Butsumetsu	辛未
10/25/26	Sun	9/15	Taian	壬申
10/26/26	Mon	9/16	Shakkō	癸酉
10/27/26	Tue	9/17	Senshō	甲戌
10/28/26	Wed	9/18	Tomobiki	乙亥
10/29/26	Thu	9/19	Senbu	丙子
10/30/26	Fri	9/20	Butsumetsu	丁丑
10/31/26	Sat	9/21	Taian	戊寅

← September 2026 · November 2026 →

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 October 2026 (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.