52 Monday–Sunday weeks

Week numbers for 2028

Every ISO 8601 week of 2028 with its code, Monday and Sunday dates, month and quarter. Select a week for its daily dates and holidays.

All ISO week numbers in 2028
Week	ISO code	Monday	Sunday	Month	Quarter
1	2028-W01	Jan 3, 2028	Jan 9, 2028	Jan	Q1
2	2028-W02	Jan 10, 2028	Jan 16, 2028	Jan	Q1
3	2028-W03	Jan 17, 2028	Jan 23, 2028	Jan	Q1
4	2028-W04	Jan 24, 2028	Jan 30, 2028	Jan	Q1
5	2028-W05	Jan 31, 2028	Feb 6, 2028	Jan/Feb	Q1
6	2028-W06	Feb 7, 2028	Feb 13, 2028	Feb	Q1
7	2028-W07	Feb 14, 2028	Feb 20, 2028	Feb	Q1
8	2028-W08	Feb 21, 2028	Feb 27, 2028	Feb	Q1
9	2028-W09	Feb 28, 2028	Mar 5, 2028	Feb/Mar	Q1
10	2028-W10	Mar 6, 2028	Mar 12, 2028	Mar	Q1
11	2028-W11	Mar 13, 2028	Mar 19, 2028	Mar	Q1
12	2028-W12	Mar 20, 2028	Mar 26, 2028	Mar	Q1
13	2028-W13	Mar 27, 2028	Apr 2, 2028	Mar/Apr	Q1
14	2028-W14	Apr 3, 2028	Apr 9, 2028	Apr	Q2
15	2028-W15	Apr 10, 2028	Apr 16, 2028	Apr	Q2
16	2028-W16	Apr 17, 2028	Apr 23, 2028	Apr	Q2
17	2028-W17	Apr 24, 2028	Apr 30, 2028	Apr	Q2
18	2028-W18	May 1, 2028	May 7, 2028	May	Q2
19	2028-W19	May 8, 2028	May 14, 2028	May	Q2
20	2028-W20	May 15, 2028	May 21, 2028	May	Q2
21	2028-W21	May 22, 2028	May 28, 2028	May	Q2
22	2028-W22	May 29, 2028	Jun 4, 2028	May/Jun	Q2
23	2028-W23	Jun 5, 2028	Jun 11, 2028	Jun	Q2
24	2028-W24	Jun 12, 2028	Jun 18, 2028	Jun	Q2
25	2028-W25	Jun 19, 2028	Jun 25, 2028	Jun	Q2
26	2028-W26	Jun 26, 2028	Jul 2, 2028	Jun/Jul	Q2
27	2028-W27	Jul 3, 2028	Jul 9, 2028	Jul	Q3
28	2028-W28	Jul 10, 2028	Jul 16, 2028	Jul	Q3
29	2028-W29	Jul 17, 2028	Jul 23, 2028	Jul	Q3
30	2028-W30	Jul 24, 2028	Jul 30, 2028	Jul	Q3
31	2028-W31	Jul 31, 2028	Aug 6, 2028	Jul/Aug	Q3
32	2028-W32	Aug 7, 2028	Aug 13, 2028	Aug	Q3
33	2028-W33	Aug 14, 2028	Aug 20, 2028	Aug	Q3
34	2028-W34	Aug 21, 2028	Aug 27, 2028	Aug	Q3
35	2028-W35	Aug 28, 2028	Sep 3, 2028	Aug/Sep	Q3
36	2028-W36	Sep 4, 2028	Sep 10, 2028	Sep	Q3
37	2028-W37	Sep 11, 2028	Sep 17, 2028	Sep	Q3
38	2028-W38	Sep 18, 2028	Sep 24, 2028	Sep	Q3
39	2028-W39	Sep 25, 2028	Oct 1, 2028	Sep/Oct	Q3
40	2028-W40	Oct 2, 2028	Oct 8, 2028	Oct	Q4
41	2028-W41	Oct 9, 2028	Oct 15, 2028	Oct	Q4
42	2028-W42	Oct 16, 2028	Oct 22, 2028	Oct	Q4
43	2028-W43	Oct 23, 2028	Oct 29, 2028	Oct	Q4
44	2028-W44	Oct 30, 2028	Nov 5, 2028	Oct/Nov	Q4
45	2028-W45	Nov 6, 2028	Nov 12, 2028	Nov	Q4
46	2028-W46	Nov 13, 2028	Nov 19, 2028	Nov	Q4
47	2028-W47	Nov 20, 2028	Nov 26, 2028	Nov	Q4
48	2028-W48	Nov 27, 2028	Dec 3, 2028	Nov/Dec	Q4
49	2028-W49	Dec 4, 2028	Dec 10, 2028	Dec	Q4
50	2028-W50	Dec 11, 2028	Dec 17, 2028	Dec	Q4
51	2028-W51	Dec 18, 2028	Dec 24, 2028	Dec	Q4
52	2028-W52	Dec 25, 2028	Dec 31, 2028	Dec	Q4

How many weeks in 2028?

2028 has 52 ISO weeks. A year gets a 53rd week only when January 1 is a Thursday, or when a leap year starts on a Wednesday.

Week 1 runs Monday, January 3 – Sunday, January 9, 2028. The last week, week 52, runs Monday, December 25 – Sunday, December 31, 2028.

Counting US-style instead (Sunday-start weeks, week 1 contains January 1), December 31, 2028, a Sunday, falls in US week 54.

How to read the table

The ISO code combines the ISO year and a zero-padded week number, such as 2028-W01. The month column shows when a week crosses a month boundary. The quarter is based on the week's Thursday, which also determines its ISO year.

Planning across New Year

The first and final ISO weeks can include dates from an adjacent calendar year. Use the ISO code when a project plan must stay unambiguous.