1666

Sixteen Sixty-Six

1666 was 358 years 8 months 2 weeks ago. There were 364 days in 1666 because this year was not a leap year. 1666 had 52 weeks. In the Chinese calendar, 1666 was the year of the horse. 🐎

The Gregorian year 1666 corresponds to 1076 or 1077 in the Hijri calendar - also known as the Muslim calendar and Islamic calendar. In the Hebrew calendar, called HaLuah HaIvri, the Gregorian year 1666 corresponds to 5426 or 5427 depending on the time of year. ☪️ ✡️

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1666 in Roman Numerals is:

MDCLXVI

Roman numeral converter »

1666 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
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

1666 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 1665 | week numbers for 1667 »

Week Number Start Day End Day
Week 53, 1665 Dec 28, 1665 Jan 3, 1666
Week 1 Jan 4, 1666 Jan 10, 1666
Week 2 Jan 11, 1666 Jan 17, 1666
Week 3 Jan 18, 1666 Jan 24, 1666
Week 4 Jan 25, 1666 Jan 31, 1666
Week 5 Feb 1, 1666 Feb 7, 1666
Week 6 Feb 8, 1666 Feb 14, 1666
Week 7 Feb 15, 1666 Feb 21, 1666
Week 8 Feb 22, 1666 Feb 28, 1666
Week 9 Mar 1, 1666 Mar 7, 1666
Week 10 Mar 8, 1666 Mar 14, 1666
Week 11 Mar 15, 1666 Mar 21, 1666
Week 12 Mar 22, 1666 Mar 28, 1666
Week 13 Mar 29, 1666 Apr 4, 1666
Week 14 Apr 5, 1666 Apr 11, 1666
Week 15 Apr 12, 1666 Apr 18, 1666
Week 16 Apr 19, 1666 Apr 25, 1666
Week 17 Apr 26, 1666 May 2, 1666
Week 18 May 3, 1666 May 9, 1666
Week 19 May 10, 1666 May 16, 1666
Week 20 May 17, 1666 May 23, 1666
Week 21 May 24, 1666 May 30, 1666
Week 22 May 31, 1666 Jun 6, 1666
Week 23 Jun 7, 1666 Jun 13, 1666
Week 24 Jun 14, 1666 Jun 20, 1666
Week 25 Jun 21, 1666 Jun 27, 1666
Week 26 Jun 28, 1666 Jul 4, 1666
Week 27 Jul 5, 1666 Jul 11, 1666
Week 28 Jul 12, 1666 Jul 18, 1666
Week 29 Jul 19, 1666 Jul 25, 1666
Week 30 Jul 26, 1666 Aug 1, 1666
Week 31 Aug 2, 1666 Aug 8, 1666
Week 32 Aug 9, 1666 Aug 15, 1666
Week 33 Aug 16, 1666 Aug 22, 1666
Week 34 Aug 23, 1666 Aug 29, 1666
Week 35 Aug 30, 1666 Sep 5, 1666
Week 36 Sep 6, 1666 Sep 12, 1666
Week 37 Sep 13, 1666 Sep 19, 1666
Week 38 Sep 20, 1666 Sep 26, 1666
Week 39 Sep 27, 1666 Oct 3, 1666
Week 40 Oct 4, 1666 Oct 10, 1666
Week 41 Oct 11, 1666 Oct 17, 1666
Week 42 Oct 18, 1666 Oct 24, 1666
Week 43 Oct 25, 1666 Oct 31, 1666
Week 44 Nov 1, 1666 Nov 7, 1666
Week 45 Nov 8, 1666 Nov 14, 1666
Week 46 Nov 15, 1666 Nov 21, 1666
Week 47 Nov 22, 1666 Nov 28, 1666
Week 48 Nov 29, 1666 Dec 5, 1666
Week 49 Dec 6, 1666 Dec 12, 1666
Week 50 Dec 13, 1666 Dec 19, 1666
Week 51 Dec 20, 1666 Dec 26, 1666
Week 52 Dec 27, 1666 Jan 2, 1667
Week 1, 1667 Jan 3, 1667 Jan 9, 1667

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