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1920 Week Numbers

ISO 8601 week numbers — every week runs Monday to Sunday.

Current ISO week number

W--

← 1919 This year 1921 →

Week Numbers 1920

Week #	Start date (Mon)	End date (Sun)
▸ 1	Mon, 29 Dec 1919	Sun, 4 Jan 1920
▸ 2	Mon, 5 Jan 1920	Sun, 11 Jan 1920
▸ 3	Mon, 12 Jan 1920	Sun, 18 Jan 1920
▸ 4	Mon, 19 Jan 1920	Sun, 25 Jan 1920
▸ 5	Mon, 26 Jan 1920	Sun, 1 Feb 1920
▸ 6	Mon, 2 Feb 1920	Sun, 8 Feb 1920
▸ 7	Mon, 9 Feb 1920	Sun, 15 Feb 1920
▸ 8	Mon, 16 Feb 1920	Sun, 22 Feb 1920
▸ 9	Mon, 23 Feb 1920	Sun, 29 Feb 1920
▸ 10	Mon, 1 Mar 1920	Sun, 7 Mar 1920
▸ 11	Mon, 8 Mar 1920	Sun, 14 Mar 1920
▸ 12	Mon, 15 Mar 1920	Sun, 21 Mar 1920
▸ 13	Mon, 22 Mar 1920	Sun, 28 Mar 1920
▸ 14	Mon, 29 Mar 1920	Sun, 4 Apr 1920
▸ 15	Mon, 5 Apr 1920	Sun, 11 Apr 1920
▸ 16	Mon, 12 Apr 1920	Sun, 18 Apr 1920
▸ 17	Mon, 19 Apr 1920	Sun, 25 Apr 1920
▸ 18	Mon, 26 Apr 1920	Sun, 2 May 1920
▸ 19	Mon, 3 May 1920	Sun, 9 May 1920
▸ 20	Mon, 10 May 1920	Sun, 16 May 1920
▸ 21	Mon, 17 May 1920	Sun, 23 May 1920
▸ 22	Mon, 24 May 1920	Sun, 30 May 1920
▸ 23	Mon, 31 May 1920	Sun, 6 Jun 1920
▸ 24	Mon, 7 Jun 1920	Sun, 13 Jun 1920
▸ 25	Mon, 14 Jun 1920	Sun, 20 Jun 1920
▸ 26	Mon, 21 Jun 1920	Sun, 27 Jun 1920
▸ 27	Mon, 28 Jun 1920	Sun, 4 Jul 1920
▸ 28	Mon, 5 Jul 1920	Sun, 11 Jul 1920
▸ 29	Mon, 12 Jul 1920	Sun, 18 Jul 1920
▸ 30	Mon, 19 Jul 1920	Sun, 25 Jul 1920
▸ 31	Mon, 26 Jul 1920	Sun, 1 Aug 1920
▸ 32	Mon, 2 Aug 1920	Sun, 8 Aug 1920
▸ 33	Mon, 9 Aug 1920	Sun, 15 Aug 1920
▸ 34	Mon, 16 Aug 1920	Sun, 22 Aug 1920
▸ 35	Mon, 23 Aug 1920	Sun, 29 Aug 1920
▸ 36	Mon, 30 Aug 1920	Sun, 5 Sep 1920
▸ 37	Mon, 6 Sep 1920	Sun, 12 Sep 1920
▸ 38	Mon, 13 Sep 1920	Sun, 19 Sep 1920
▸ 39	Mon, 20 Sep 1920	Sun, 26 Sep 1920
▸ 40	Mon, 27 Sep 1920	Sun, 3 Oct 1920
▸ 41	Mon, 4 Oct 1920	Sun, 10 Oct 1920
▸ 42	Mon, 11 Oct 1920	Sun, 17 Oct 1920
▸ 43	Mon, 18 Oct 1920	Sun, 24 Oct 1920
▸ 44	Mon, 25 Oct 1920	Sun, 31 Oct 1920
▸ 45	Mon, 1 Nov 1920	Sun, 7 Nov 1920
▸ 46	Mon, 8 Nov 1920	Sun, 14 Nov 1920
▸ 47	Mon, 15 Nov 1920	Sun, 21 Nov 1920
▸ 48	Mon, 22 Nov 1920	Sun, 28 Nov 1920
▸ 49	Mon, 29 Nov 1920	Sun, 5 Dec 1920
▸ 50	Mon, 6 Dec 1920	Sun, 12 Dec 1920
▸ 51	Mon, 13 Dec 1920	Sun, 19 Dec 1920
▸ 52	Mon, 20 Dec 1920	Sun, 26 Dec 1920
▸ 53	Mon, 27 Dec 1920	Sun, 2 Jan 1921

About ISO 8601 Week Numbers

Under the ISO 8601 standard, weeks start on Monday and are numbered from 1 to 52 or 53. Week 1 is the week that contains the first Thursday of the year — equivalently, the week containing January 4th. As a result, the first few days of January can fall in the last week of the previous year, and the last days of December can fall in week 1 of the next year.

A year has 53 ISO weeks when it starts on a Thursday, or on a Wednesday in a leap year; otherwise it has 52. 1920 has 53 ISO weeks.