December 21, 1640

Dec. 1640

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Friday, December 21, 1640
Japanese calendar: Reiwa -378
Old calendar: November 9, 1640 先勝 (Senshou)

The 24 divisions of the solar year	冬至 (Touji)
72 pentads	乃東生Natsukarekusa shouzu (なつかれくさしょうず)
Twenty-eight mansions	牛gyuu (ぎゅう)
The 12 words used to mark the old calendar	開Hiraku (ひらく)

	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	Hinoe-inu ひのえいぬ丙戌
Fushi-tsuki	Kanoe-tatsu かのえたつ庚辰	Tsuchinoe-ne つちのえね戊子	Hinoe-inu ひのえいぬ丙戌

Age of the moon	Moon
8.11

Today (August 29, 2025) is 140504.01318287 days after December 21, 1640. (First day as day 0)

From December 21, 1640 to YEAR MONTH DAY

The start date is not included included

From YEAR MONTH DAY to December 21, 1640

The start date is not included included

The day before, December 21, 1640	The next day, December 21, 1640
Date before one month(November 21, 1640)	Date after one month(January 21, 1641)
December 21 one year ago	December 21 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	Hinoe-inu ひのえいぬ丙戌
Fushi-tsuki	Kanoe-tatsu かのえたつ庚辰	Tsuchinoe-ne つちのえね戊子	Hinoe-inu ひのえいぬ丙戌

December 21, 1640 Japanese calendar, old calendar, six basic labels, moon age, etc.