Week Numbers 2028

Every ISO week of the year with its Monday and Sunday – as used in business, logistics and most of Europe.

In short

2028 has 52 ISO weeks. Week 1 runs from Monday, January 3, 2028 to Sunday, January 9, 2028; the days before still belong to week 52 of 2027. ISO weeks start on Monday, while US wall calendars start on Sunday.

Week numbers 2028PDF · US Letter A4One page, portrait

All 52 weeks of 2028

Week	Monday	Sunday
1	01/03/2028	01/09/2028
2	01/10/2028	01/16/2028
3	01/17/2028	01/23/2028
4	01/24/2028	01/30/2028
5	01/31/2028	02/06/2028
6	02/07/2028	02/13/2028
7	02/14/2028	02/20/2028
8	02/21/2028	02/27/2028
9	02/28/2028	03/05/2028
10	03/06/2028	03/12/2028
11	03/13/2028	03/19/2028
12	03/20/2028	03/26/2028
13	03/27/2028	04/02/2028
14	04/03/2028	04/09/2028
15	04/10/2028	04/16/2028
16	04/17/2028	04/23/2028
17	04/24/2028	04/30/2028
18	05/01/2028	05/07/2028
19	05/08/2028	05/14/2028
20	05/15/2028	05/21/2028
21	05/22/2028	05/28/2028
22	05/29/2028	06/04/2028
23	06/05/2028	06/11/2028
24	06/12/2028	06/18/2028
25	06/19/2028	06/25/2028
26	06/26/2028	07/02/2028

Week	Monday	Sunday
27	07/03/2028	07/09/2028
28	07/10/2028	07/16/2028
29	07/17/2028	07/23/2028
30	07/24/2028	07/30/2028
31	07/31/2028	08/06/2028
32	08/07/2028	08/13/2028
33	08/14/2028	08/20/2028
34	08/21/2028	08/27/2028
35	08/28/2028	09/03/2028
36	09/04/2028	09/10/2028
37	09/11/2028	09/17/2028
38	09/18/2028	09/24/2028
39	09/25/2028	10/01/2028
40	10/02/2028	10/08/2028
41	10/09/2028	10/15/2028
42	10/16/2028	10/22/2028
43	10/23/2028	10/29/2028
44	10/30/2028	11/05/2028
45	11/06/2028	11/12/2028
46	11/13/2028	11/19/2028
47	11/20/2028	11/26/2028
48	11/27/2028	12/03/2028
49	12/04/2028	12/10/2028
50	12/11/2028	12/17/2028
51	12/18/2028	12/24/2028
52	12/25/2028	12/31/2028

Questions

How many weeks are in 2028?

52 ISO weeks. A year has 53 weeks when it starts on a Thursday (or on a Wednesday in a leap year).

What is week 1?

Under ISO 8601, week 1 is the week with the first Thursday of the year – the week that contains January 4.

Does the US use ISO week numbers?

Many US companies use them for planning, but there is no official US week numbering; some count from the week containing January 1 with Sunday as the first day.

Source: ISO 8601 week dates · Updated: November 2026 · How the calendars are made

All 52 weeks of 2028

Questions

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