Week numbers 2028

2028 has 52 weeks. Week 1 starts on Monday, January 3, 2028 and week 52 ends on Sunday, December 31, 2028.

All week numbers of 2028, with the start and end date of every week, in both the ISO-8601 standard and the US system.

All weeks of 2028

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Week numbers 2028 (ISO-8601)
WeekStart dateEnd date
52Saturday, January 1, 2028Sunday, January 2, 2028
1Monday, January 3, 2028Sunday, January 9, 2028
2Monday, January 10, 2028Sunday, January 16, 2028
3Monday, January 17, 2028Sunday, January 23, 2028
4Monday, January 24, 2028Sunday, January 30, 2028
5Monday, January 31, 2028Sunday, February 6, 2028
6Monday, February 7, 2028Sunday, February 13, 2028
7Monday, February 14, 2028Sunday, February 20, 2028
8Monday, February 21, 2028Sunday, February 27, 2028
9Monday, February 28, 2028Sunday, March 5, 2028
10Monday, March 6, 2028Sunday, March 12, 2028
11Monday, March 13, 2028Sunday, March 19, 2028
12Monday, March 20, 2028Sunday, March 26, 2028
13Monday, March 27, 2028Sunday, April 2, 2028
14Monday, April 3, 2028Sunday, April 9, 2028
15Monday, April 10, 2028Sunday, April 16, 2028
16Monday, April 17, 2028Sunday, April 23, 2028
17Monday, April 24, 2028Sunday, April 30, 2028
18Monday, May 1, 2028Sunday, May 7, 2028
19Monday, May 8, 2028Sunday, May 14, 2028
20Monday, May 15, 2028Sunday, May 21, 2028
21Monday, May 22, 2028Sunday, May 28, 2028
22Monday, May 29, 2028Sunday, June 4, 2028
23Monday, June 5, 2028Sunday, June 11, 2028
24Monday, June 12, 2028Sunday, June 18, 2028
25Monday, June 19, 2028Sunday, June 25, 2028
26Monday, June 26, 2028Sunday, July 2, 2028
27Monday, July 3, 2028Sunday, July 9, 2028
28Monday, July 10, 2028Sunday, July 16, 2028
29Monday, July 17, 2028Sunday, July 23, 2028
30Monday, July 24, 2028Sunday, July 30, 2028
31Monday, July 31, 2028Sunday, August 6, 2028
32Monday, August 7, 2028Sunday, August 13, 2028
33Monday, August 14, 2028Sunday, August 20, 2028
34Monday, August 21, 2028Sunday, August 27, 2028
35Monday, August 28, 2028Sunday, September 3, 2028
36Monday, September 4, 2028Sunday, September 10, 2028
37Monday, September 11, 2028Sunday, September 17, 2028
38Monday, September 18, 2028Sunday, September 24, 2028
39Monday, September 25, 2028Sunday, October 1, 2028
40Monday, October 2, 2028Sunday, October 8, 2028
41Monday, October 9, 2028Sunday, October 15, 2028
42Monday, October 16, 2028Sunday, October 22, 2028
43Monday, October 23, 2028Sunday, October 29, 2028
44Monday, October 30, 2028Sunday, November 5, 2028
45Monday, November 6, 2028Sunday, November 12, 2028
46Monday, November 13, 2028Sunday, November 19, 2028
47Monday, November 20, 2028Sunday, November 26, 2028
48Monday, November 27, 2028Sunday, December 3, 2028
49Monday, December 4, 2028Sunday, December 10, 2028
50Monday, December 11, 2028Sunday, December 17, 2028
51Monday, December 18, 2028Sunday, December 24, 2028
52Monday, December 25, 2028Sunday, December 31, 2028

The first and last row of a year overview can be shorter than seven days.

Week numbers according to the international standard. Source: ISO 8601. More about our sources

The US count (weeks start on Sunday, week 1 contains 1 January) is a common convention without an official standard.

US week numbers 2028

In the United States weeks start on Sunday and week 1 is the week containing January 1 (as in Excel WEEKNUM and Outlook).

US week numbers 2028 (Sunday to Saturday)
WeekStart dateEnd date
1Saturday, January 1, 2028Saturday, January 1, 2028
2Sunday, January 2, 2028Saturday, January 8, 2028
3Sunday, January 9, 2028Saturday, January 15, 2028
4Sunday, January 16, 2028Saturday, January 22, 2028
5Sunday, January 23, 2028Saturday, January 29, 2028
6Sunday, January 30, 2028Saturday, February 5, 2028
7Sunday, February 6, 2028Saturday, February 12, 2028
8Sunday, February 13, 2028Saturday, February 19, 2028
9Sunday, February 20, 2028Saturday, February 26, 2028
10Sunday, February 27, 2028Saturday, March 4, 2028
11Sunday, March 5, 2028Saturday, March 11, 2028
12Sunday, March 12, 2028Saturday, March 18, 2028
13Sunday, March 19, 2028Saturday, March 25, 2028
14Sunday, March 26, 2028Saturday, April 1, 2028
15Sunday, April 2, 2028Saturday, April 8, 2028
16Sunday, April 9, 2028Saturday, April 15, 2028
17Sunday, April 16, 2028Saturday, April 22, 2028
18Sunday, April 23, 2028Saturday, April 29, 2028
19Sunday, April 30, 2028Saturday, May 6, 2028
20Sunday, May 7, 2028Saturday, May 13, 2028
21Sunday, May 14, 2028Saturday, May 20, 2028
22Sunday, May 21, 2028Saturday, May 27, 2028
23Sunday, May 28, 2028Saturday, June 3, 2028
24Sunday, June 4, 2028Saturday, June 10, 2028
25Sunday, June 11, 2028Saturday, June 17, 2028
26Sunday, June 18, 2028Saturday, June 24, 2028
27Sunday, June 25, 2028Saturday, July 1, 2028
28Sunday, July 2, 2028Saturday, July 8, 2028
29Sunday, July 9, 2028Saturday, July 15, 2028
30Sunday, July 16, 2028Saturday, July 22, 2028
31Sunday, July 23, 2028Saturday, July 29, 2028
32Sunday, July 30, 2028Saturday, August 5, 2028
33Sunday, August 6, 2028Saturday, August 12, 2028
34Sunday, August 13, 2028Saturday, August 19, 2028
35Sunday, August 20, 2028Saturday, August 26, 2028
36Sunday, August 27, 2028Saturday, September 2, 2028
37Sunday, September 3, 2028Saturday, September 9, 2028
38Sunday, September 10, 2028Saturday, September 16, 2028
39Sunday, September 17, 2028Saturday, September 23, 2028
40Sunday, September 24, 2028Saturday, September 30, 2028
41Sunday, October 1, 2028Saturday, October 7, 2028
42Sunday, October 8, 2028Saturday, October 14, 2028
43Sunday, October 15, 2028Saturday, October 21, 2028
44Sunday, October 22, 2028Saturday, October 28, 2028
45Sunday, October 29, 2028Saturday, November 4, 2028
46Sunday, November 5, 2028Saturday, November 11, 2028
47Sunday, November 12, 2028Saturday, November 18, 2028
48Sunday, November 19, 2028Saturday, November 25, 2028
49Sunday, November 26, 2028Saturday, December 2, 2028
50Sunday, December 3, 2028Saturday, December 9, 2028
51Sunday, December 10, 2028Saturday, December 16, 2028
52Sunday, December 17, 2028Saturday, December 23, 2028
53Sunday, December 24, 2028Saturday, December 30, 2028
54Sunday, December 31, 2028Sunday, December 31, 2028

How do week numbers work?

Most of the world uses the ISO-8601 standard: weeks start on Monday and week 1 is the week with the first Thursday of the year. A year can therefore start in week 52 or 53 of the previous year.

Week numbers in 2028: US and ISO

In the US system, 2028 is divided into 54 numbered weeks. Week 1 starts on January 1, a Saturday, and ends on the first Saturday of the year. Every following week runs from Sunday to Saturday, and the last week ends on December 31, so the first and last weeks can be shorter than seven days.

Under ISO 8601, 2028 has 52 weeks, each running from Monday to Sunday. ISO week 1 starts on Monday, January 3, 2028.

The next year with 53 ISO weeks is 2032.

Up to and including January 2, the first days of January still belong to ISO week 52 of 2027, while in the US system they are already week 1.

Using the 2028 week numbers

The tables above show the start and end date of every week in both systems. That makes it easy to find the dates for a week number, for a delivery, a payroll period or a project deadline, whichever system your company or partner uses.

You can print all week numbers of 2028 or download them as an Excel or PDF file.

Frequently asked questions

How many weeks are there in 2028?

2028 has 52 weeks under ISO-8601 and 54 weeks in the US system, where a new week starts every Sunday.

When does week 1 of 2028 start?

In the US system, week 1 starts on January 1. Under ISO-8601, week 1 of 2028 starts on Monday, January 3, 2028.

Can I download the 2028 week numbers?

Yes, use the buttons next to the table: print, Excel or PDF.

What day of the week does 2028 start on?

January 1, 2028 is a Saturday. In the US system, week 1 runs from that day until the first Saturday of the year.

How many weeks are there in 2029?

Under ISO-8601, 2029 has 52 weeks.

See also

In other countries