December 20, 1640

Dec. 1640

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Thursday, December 20, 1640
Japanese calendar: Reiwa -378
Old calendar: November 8, 1640 赤口 (Shakkou)

72 pentads	鮭魚群Sake no uo muragaru (さけのうおむらがる)
Twenty-eight mansions	斗to (と)
The 12 words used to mark the old calendar	納Osan (おさん)

	Year sexagenary cycle	Month sexagenary cycle	Day sexagenary cycle
Koyomi-tsuki	Kanoe-tatsu かのえたつ庚辰	Tsuchinotono-ushi つちのとのうし己丑	Kinotono-tori きのとのとり乙酉
Fushi-tsuki	Kanoe-tatsu かのえたつ庚辰	Tsuchinoe-ne つちのえね戊子	Kinotono-tori きのとのとり乙酉

Age of the moon	Moon
7.11

Today (August 29, 2025) is 140505.01318287 days after December 20, 1640. (First day as day 0)

From December 20, 1640 to YEAR MONTH DAY

The start date is not included included

From YEAR MONTH DAY to December 20, 1640

The start date is not included included

The day before, December 20, 1640	The next day, December 20, 1640
Date before one month(November 20, 1640)	Date after one month(January 20, 1641)
December 20 one year ago	December 20 after one year

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	Year sexagenary cycle	Month sexagenary cycle	Day sexagenary cycle
Koyomi-tsuki	Kanoe-tatsu かのえたつ庚辰	Tsuchinotono-ushi つちのとのうし己丑	Kinotono-tori きのとのとり乙酉
Fushi-tsuki	Kanoe-tatsu かのえたつ庚辰	Tsuchinoe-ne つちのえね戊子	Kinotono-tori きのとのとり乙酉

December 20, 1640 Japanese calendar, old calendar, six basic labels, moon age, etc.