Week numbers 2028

2028 has

ISO weeks

Week 1 of 2028 starts on Monday, January 3, 2028, and week 52 ends on Sunday, December 31, 2028. Weeks follow ISO 8601: Monday start, week 1 holds the year's first Thursday.

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

How many weeks are in 2028?

2028 has 52 ISO weeks. Most years have 52; a year has 53 when it starts on a Thursday (or on a Wednesday in a leap year).

When does week 1 of 2028 start?

Week 1 of 2028 starts on Monday, January 3, 2028 — ISO week 1 is the week containing the year's first Thursday, so it can start in late December.

What is the Excel formula for week numbers?

=ISOWEEKNUM(A1) returns the ISO week number of the date in A1 (the numbering used on this page); =WEEKNUM(A1) uses the US Sunday-start convention. Both work in Excel and Google Sheets.