1644

Sixteen Forty-Four

1644 was 380 years 4 months 2 weeks ago. There were 365 days in 1644 because this year was a leap year. 1644 had 52 weeks. In the Chinese calendar, 1644 was the year of the monkey. 🐒

The Gregorian year 1644 corresponds to 1053 or 1054 in the Hijri calendar - also known as the Muslim calendar and Islamic calendar. In the Hebrew calendar, called HaLuah HaIvri, the Gregorian year 1644 corresponds to 5404 or 5405 depending on the time of year. ☪️ ✡️

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1644 in Roman Numerals is:

MDCXLIV

Roman numeral converter »

1644 Holiday Calendar

January
Su Mo Tu We Th Fr Sa
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31
February
Su Mo Tu We Th Fr Sa
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29
March
Su Mo Tu We Th Fr Sa
1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 31
April
Su Mo Tu We Th Fr Sa
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
May
Su Mo Tu We Th Fr Sa
1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31
June
Su Mo Tu We Th Fr Sa
1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30
July
Su Mo Tu We Th Fr Sa
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31
August
Su Mo Tu We Th Fr Sa
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30 31
September
Su Mo Tu We Th Fr Sa
1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30
October
Su Mo Tu We Th Fr Sa
1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31
November
Su Mo Tu We Th Fr Sa
1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30
December
Su Mo Tu We Th Fr Sa
1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30 31

1644 Week Numbers

This table assumes weeks start on Monday and end on Sunday. This is based on the ISO-8601 week date standard. In the US, Canada, and most of South America weeks normally start on Sunday.

« week numbers for 1643 | week numbers for 1645 »

Week Number Start Day End Day
Week 53, 1643 Dec 28, 1643 Jan 3, 1644
Week 1 Jan 4, 1644 Jan 10, 1644
Week 2 Jan 11, 1644 Jan 17, 1644
Week 3 Jan 18, 1644 Jan 24, 1644
Week 4 Jan 25, 1644 Jan 31, 1644
Week 5 Feb 1, 1644 Feb 7, 1644
Week 6 Feb 8, 1644 Feb 14, 1644
Week 7 Feb 15, 1644 Feb 21, 1644
Week 8 Feb 22, 1644 Feb 28, 1644
Week 9 Feb 29, 1644 Mar 6, 1644
Week 10 Mar 7, 1644 Mar 13, 1644
Week 11 Mar 14, 1644 Mar 20, 1644
Week 12 Mar 21, 1644 Mar 27, 1644
Week 13 Mar 28, 1644 Apr 3, 1644
Week 14 Apr 4, 1644 Apr 10, 1644
Week 15 Apr 11, 1644 Apr 17, 1644
Week 16 Apr 18, 1644 Apr 24, 1644
Week 17 Apr 25, 1644 May 1, 1644
Week 18 May 2, 1644 May 8, 1644
Week 19 May 9, 1644 May 15, 1644
Week 20 May 16, 1644 May 22, 1644
Week 21 May 23, 1644 May 29, 1644
Week 22 May 30, 1644 Jun 5, 1644
Week 23 Jun 6, 1644 Jun 12, 1644
Week 24 Jun 13, 1644 Jun 19, 1644
Week 25 Jun 20, 1644 Jun 26, 1644
Week 26 Jun 27, 1644 Jul 3, 1644
Week 27 Jul 4, 1644 Jul 10, 1644
Week 28 Jul 11, 1644 Jul 17, 1644
Week 29 Jul 18, 1644 Jul 24, 1644
Week 30 Jul 25, 1644 Jul 31, 1644
Week 31 Aug 1, 1644 Aug 7, 1644
Week 32 Aug 8, 1644 Aug 14, 1644
Week 33 Aug 15, 1644 Aug 21, 1644
Week 34 Aug 22, 1644 Aug 28, 1644
Week 35 Aug 29, 1644 Sep 4, 1644
Week 36 Sep 5, 1644 Sep 11, 1644
Week 37 Sep 12, 1644 Sep 18, 1644
Week 38 Sep 19, 1644 Sep 25, 1644
Week 39 Sep 26, 1644 Oct 2, 1644
Week 40 Oct 3, 1644 Oct 9, 1644
Week 41 Oct 10, 1644 Oct 16, 1644
Week 42 Oct 17, 1644 Oct 23, 1644
Week 43 Oct 24, 1644 Oct 30, 1644
Week 44 Oct 31, 1644 Nov 6, 1644
Week 45 Nov 7, 1644 Nov 13, 1644
Week 46 Nov 14, 1644 Nov 20, 1644
Week 47 Nov 21, 1644 Nov 27, 1644
Week 48 Nov 28, 1644 Dec 4, 1644
Week 49 Dec 5, 1644 Dec 11, 1644
Week 50 Dec 12, 1644 Dec 18, 1644
Week 51 Dec 19, 1644 Dec 25, 1644
Week 52 Dec 26, 1644 Jan 1, 1645
Week 1, 1645 Jan 2, 1645 Jan 8, 1645

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