Week numbers 2027
2027 has 52 ISO weeks. Week 1 starts Monday 4 January 2027; week 52 ends Sunday 2 January 2028.
ISO 8601 week numbering: weeks run Monday–Sunday, and a week belongs to the year that contains its Thursday — so the first days of January can belong to the last week of the previous year, and vice versa.
todaycurrent weekother month
January 31 days · 21 weekdays
Wk
Mo
Tu
We
Th
Fr
Sa
Su
53
28
29
30
31
1
2
3
1
4
5
6
7
8
9
10
2
11
12
13
14
15
16
17
3
18
19
20
21
22
23
24
4
25
26
27
28
29
30
31
February 28 days · 20 weekdays
Wk
Mo
Tu
We
Th
Fr
Sa
Su
5
1
2
3
4
5
6
7
6
8
9
10
11
12
13
14
7
15
16
17
18
19
20
21
8
22
23
24
25
26
27
28
March 31 days · 23 weekdays
Wk
Mo
Tu
We
Th
Fr
Sa
Su
9
1
2
3
4
5
6
7
10
8
9
10
11
12
13
14
11
15
16
17
18
19
20
21
12
22
23
24
25
26
27
28
13
29
30
31
1
2
3
4
April 30 days · 22 weekdays
Wk
Mo
Tu
We
Th
Fr
Sa
Su
13
29
30
31
1
2
3
4
14
5
6
7
8
9
10
11
15
12
13
14
15
16
17
18
16
19
20
21
22
23
24
25
17
26
27
28
29
30
1
2
May 31 days · 21 weekdays
Wk
Mo
Tu
We
Th
Fr
Sa
Su
17
26
27
28
29
30
1
2
18
3
4
5
6
7
8
9
19
10
11
12
13
14
15
16
20
17
18
19
20
21
22
23
21
24
25
26
27
28
29
30
22
31
1
2
3
4
5
6
June 30 days · 22 weekdays
Wk
Mo
Tu
We
Th
Fr
Sa
Su
22
31
1
2
3
4
5
6
23
7
8
9
10
11
12
13
24
14
15
16
17
18
19
20
25
21
22
23
24
25
26
27
26
28
29
30
1
2
3
4
July 31 days · 22 weekdays
Wk
Mo
Tu
We
Th
Fr
Sa
Su
26
28
29
30
1
2
3
4
27
5
6
7
8
9
10
11
28
12
13
14
15
16
17
18
29
19
20
21
22
23
24
25
30
26
27
28
29
30
31
1
August 31 days · 22 weekdays
Wk
Mo
Tu
We
Th
Fr
Sa
Su
30
26
27
28
29
30
31
1
31
2
3
4
5
6
7
8
32
9
10
11
12
13
14
15
33
16
17
18
19
20
21
22
34
23
24
25
26
27
28
29
35
30
31
1
2
3
4
5
September 30 days · 22 weekdays
Wk
Mo
Tu
We
Th
Fr
Sa
Su
35
30
31
1
2
3
4
5
36
6
7
8
9
10
11
12
37
13
14
15
16
17
18
19
38
20
21
22
23
24
25
26
39
27
28
29
30
1
2
3
October 31 days · 21 weekdays
Wk
Mo
Tu
We
Th
Fr
Sa
Su
39
27
28
29
30
1
2
3
40
4
5
6
7
8
9
10
41
11
12
13
14
15
16
17
42
18
19
20
21
22
23
24
43
25
26
27
28
29
30
31
November 30 days · 22 weekdays
Wk
Mo
Tu
We
Th
Fr
Sa
Su
44
1
2
3
4
5
6
7
45
8
9
10
11
12
13
14
46
15
16
17
18
19
20
21
47
22
23
24
25
26
27
28
48
29
30
1
2
3
4
5
December 31 days · 23 weekdays
Wk
Mo
Tu
We
Th
Fr
Sa
Su
48
29
30
1
2
3
4
5
49
6
7
8
9
10
11
12
50
13
14
15
16
17
18
19
51
20
21
22
23
24
25
26
52
27
28
29
30
31
1
2
All 52 weeks of 2027 as a list with dates
| ISO week | Starts (Monday) | Ends (Sunday) |
|---|---|---|
| Week 1 | 4 January 2027 | 10 January 2027 |
| Week 2 | 11 January 2027 | 17 January 2027 |
| Week 3 | 18 January 2027 | 24 January 2027 |
| Week 4 | 25 January 2027 | 31 January 2027 |
| Week 5 | 1 February 2027 | 7 February 2027 |
| Week 6 | 8 February 2027 | 14 February 2027 |
| Week 7 | 15 February 2027 | 21 February 2027 |
| Week 8 | 22 February 2027 | 28 February 2027 |
| Week 9 | 1 March 2027 | 7 March 2027 |
| Week 10 | 8 March 2027 | 14 March 2027 |
| Week 11 | 15 March 2027 | 21 March 2027 |
| Week 12 | 22 March 2027 | 28 March 2027 |
| Week 13 | 29 March 2027 | 4 April 2027 |
| Week 14 | 5 April 2027 | 11 April 2027 |
| Week 15 | 12 April 2027 | 18 April 2027 |
| Week 16 | 19 April 2027 | 25 April 2027 |
| Week 17 | 26 April 2027 | 2 May 2027 |
| Week 18 | 3 May 2027 | 9 May 2027 |
| Week 19 | 10 May 2027 | 16 May 2027 |
| Week 20 | 17 May 2027 | 23 May 2027 |
| Week 21 | 24 May 2027 | 30 May 2027 |
| Week 22 | 31 May 2027 | 6 June 2027 |
| Week 23 | 7 June 2027 | 13 June 2027 |
| Week 24 | 14 June 2027 | 20 June 2027 |
| Week 25 | 21 June 2027 | 27 June 2027 |
| Week 26 | 28 June 2027 | 4 July 2027 |
| Week 27 | 5 July 2027 | 11 July 2027 |
| Week 28 | 12 July 2027 | 18 July 2027 |
| Week 29 | 19 July 2027 | 25 July 2027 |
| Week 30 | 26 July 2027 | 1 August 2027 |
| Week 31 | 2 August 2027 | 8 August 2027 |
| Week 32 | 9 August 2027 | 15 August 2027 |
| Week 33 | 16 August 2027 | 22 August 2027 |
| Week 34 | 23 August 2027 | 29 August 2027 |
| Week 35 | 30 August 2027 | 5 September 2027 |
| Week 36 | 6 September 2027 | 12 September 2027 |
| Week 37 | 13 September 2027 | 19 September 2027 |
| Week 38 | 20 September 2027 | 26 September 2027 |
| Week 39 | 27 September 2027 | 3 October 2027 |
| Week 40 | 4 October 2027 | 10 October 2027 |
| Week 41 | 11 October 2027 | 17 October 2027 |
| Week 42 | 18 October 2027 | 24 October 2027 |
| Week 43 | 25 October 2027 | 31 October 2027 |
| Week 44 | 1 November 2027 | 7 November 2027 |
| Week 45 | 8 November 2027 | 14 November 2027 |
| Week 46 | 15 November 2027 | 21 November 2027 |
| Week 47 | 22 November 2027 | 28 November 2027 |
| Week 48 | 29 November 2027 | 5 December 2027 |
| Week 49 | 6 December 2027 | 12 December 2027 |
| Week 50 | 13 December 2027 | 19 December 2027 |
| Week 51 | 20 December 2027 | 26 December 2027 |
| Week 52 | 27 December 2027 | 2 January 2028 |