The following table shows all ISO calendar weeks 2023 from 1 to 53, with their start date beginning on Monday and their end date falling on Sunday.
European and Asian ISO calendar weeks 2023 - CW 2023 | |||
---|---|---|---|
CW | ISO-Name | ||
Monday, January 2, 2023 | Sunday, January 8, 2023 | 2023‑W01 | |
Monday, January 9, 2023 | Sunday, January 15, 2023 | 2023‑W02 | |
Monday, January 16, 2023 | Sunday, January 22, 2023 | 2023‑W03 | |
Monday, January 23, 2023 | Sunday, January 29, 2023 | 2023‑W04 | |
Monday, January 30, 2023 | Sunday, February 5, 2023 | 2023‑W05 | |
Monday, February 6, 2023 | Sunday, February 12, 2023 | 2023‑W06 | |
Monday, February 13, 2023 | Sunday, February 19, 2023 | 2023‑W07 | |
Monday, February 20, 2023 | Sunday, February 26, 2023 | 2023‑W08 | |
Monday, February 27, 2023 | Sunday, March 5, 2023 | 2023‑W09 | |
Monday, March 6, 2023 | Sunday, March 12, 2023 | 2023‑W10 | |
Monday, March 13, 2023 | Sunday, March 19, 2023 | 2023‑W11 | |
Monday, March 20, 2023 | Sunday, March 26, 2023 | 2023‑W12 | |
Monday, March 27, 2023 | Sunday, April 2, 2023 | 2023‑W13 | |
Monday, April 3, 2023 | Sunday, April 9, 2023 | 2023‑W14 | |
Monday, April 10, 2023 | Sunday, April 16, 2023 | 2023‑W15 | |
Monday, April 17, 2023 | Sunday, April 23, 2023 | 2023‑W16 | |
Monday, April 24, 2023 | Sunday, April 30, 2023 | 2023‑W17 | |
Monday, May 1, 2023 | Sunday, May 7, 2023 | 2023‑W18 | |
Monday, May 8, 2023 | Sunday, May 14, 2023 | 2023‑W19 | |
Monday, May 15, 2023 | Sunday, May 21, 2023 | 2023‑W20 | |
Monday, May 22, 2023 | Sunday, May 28, 2023 | 2023‑W21 | |
Monday, May 29, 2023 | Sunday, June 4, 2023 | 2023‑W22 | |
Monday, June 5, 2023 | Sunday, June 11, 2023 | 2023‑W23 | |
Monday, June 12, 2023 | Sunday, June 18, 2023 | 2023‑W24 | |
Monday, June 19, 2023 | Sunday, June 25, 2023 | 2023‑W25 | |
Monday, June 26, 2023 | Sunday, July 2, 2023 | 2023‑W26 | |
Monday, July 3, 2023 | Sunday, July 9, 2023 | 2023‑W27 | |
Monday, July 10, 2023 | Sunday, July 16, 2023 | 2023‑W28 | |
Monday, July 17, 2023 | Sunday, July 23, 2023 | 2023‑W29 | |
Monday, July 24, 2023 | Sunday, July 30, 2023 | 2023‑W30 | |
Monday, July 31, 2023 | Sunday, August 6, 2023 | 2023‑W31 | |
Monday, August 7, 2023 | Sunday, August 13, 2023 | 2023‑W32 | |
Monday, August 14, 2023 | Sunday, August 20, 2023 | 2023‑W33 | |
Monday, August 21, 2023 | Sunday, August 27, 2023 | 2023‑W34 | |
Monday, August 28, 2023 | Sunday, September 3, 2023 | 2023‑W35 | |
Monday, September 4, 2023 | Sunday, September 10, 2023 | 2023‑W36 | |
Monday, September 11, 2023 | Sunday, September 17, 2023 | 2023‑W37 | |
Monday, September 18, 2023 | Sunday, September 24, 2023 | 2023‑W38 | |
Monday, September 25, 2023 | Sunday, October 1, 2023 | 2023‑W39 | |
Monday, October 2, 2023 | Sunday, October 8, 2023 | 2023‑W40 | |
Monday, October 9, 2023 | Sunday, October 15, 2023 | 2023‑W41 | |
Monday, October 16, 2023 | Sunday, October 22, 2023 | 2023‑W42 | |
Monday, October 23, 2023 | Sunday, October 29, 2023 | 2023‑W43 | |
Monday, October 30, 2023 | Sunday, November 5, 2023 | 2023‑W44 | |
Monday, November 6, 2023 | Sunday, November 12, 2023 | 2023‑W45 | |
Monday, November 13, 2023 | Sunday, November 19, 2023 | 2023‑W46 | |
Monday, November 20, 2023 | Sunday, November 26, 2023 | 2023‑W47 | |
Monday, November 27, 2023 | Sunday, December 3, 2023 | 2023‑W48 | |
Monday, December 4, 2023 | Sunday, December 10, 2023 | 2023‑W49 | |
Monday, December 11, 2023 | Sunday, December 17, 2023 | 2023‑W50 | |
Monday, December 18, 2023 | Sunday, December 24, 2023 | 2023‑W51 | |
Monday, December 25, 2023 | Sunday, December 31, 2023 | 2023‑W52 | |
2023 does not exist week 53 | 2023 has only 52 calendar weeks | 2023‑W53 |
The ISO calendar weeks for 2023 are defined according to the international ISO standard. That is, each calendar week starts on Monday and ends on Sunday. Even during the change of year, a new calendar week starts on Monday and ends on Sunday. The ISO standard specifies that the majority of the first calendar week (i.e., at least four days) must lie in the new year.
Table of all American calendar weeks for 2023
The following table shows all "American" calendar weeks 2023, with their start date beginning on Sunday and their end date falling on Saturday.
American calendar weeks 2023 - CW 2023 | ||
---|---|---|
CW | Start of the CW | End of the CW |
1 | Sunday, January 1, 2023 | Saturday, January 7, 2023 |
2 | Sunday, January 8, 2023 | Saturday, January 14, 2023 |
3 | Sunday, January 15, 2023 | Saturday, January 21, 2023 |
4 | Sunday, January 22, 2023 | Saturday, January 28, 2023 |
5 | Sunday, January 29, 2023 | Saturday, February 4, 2023 |
6 | Sunday, February 5, 2023 | Saturday, February 11, 2023 |
7 | Sunday, February 12, 2023 | Saturday, February 18, 2023 |
8 | Sunday, February 19, 2023 | Saturday, February 25, 2023 |
9 | Sunday, February 26, 2023 | Saturday, March 4, 2023 |
10 | Sunday, March 5, 2023 | Saturday, March 11, 2023 |
11 | Sunday, March 12, 2023 | Saturday, March 18, 2023 |
12 | Sunday, March 19, 2023 | Saturday, March 25, 2023 |
13 | Sunday, March 26, 2023 | Saturday, April 1, 2023 |
14 | Sunday, April 2, 2023 | Saturday, April 8, 2023 |
15 | Sunday, April 9, 2023 | Saturday, April 15, 2023 |
16 | Sunday, April 16, 2023 | Saturday, April 22, 2023 |
17 | Sunday, April 23, 2023 | Saturday, April 29, 2023 |
18 | Sunday, April 30, 2023 | Saturday, May 6, 2023 |
19 | Sunday, May 7, 2023 | Saturday, May 13, 2023 |
20 | Sunday, May 14, 2023 | Saturday, May 20, 2023 |
21 | Sunday, May 21, 2023 | Saturday, May 27, 2023 |
22 | Sunday, May 28, 2023 | Saturday, June 3, 2023 |
23 | Sunday, June 4, 2023 | Saturday, June 10, 2023 |
24 | Sunday, June 11, 2023 | Saturday, June 17, 2023 |
25 | Sunday, June 18, 2023 | Saturday, June 24, 2023 |
26 | Sunday, June 25, 2023 | Saturday, July 1, 2023 |
27 | Sunday, July 2, 2023 | Saturday, July 8, 2023 |
28 | Sunday, July 9, 2023 | Saturday, July 15, 2023 |
29 | Sunday, July 16, 2023 | Saturday, July 22, 2023 |
30 | Sunday, July 23, 2023 | Saturday, July 29, 2023 |
31 | Sunday, July 30, 2023 | Saturday, August 5, 2023 |
32 | Sunday, August 6, 2023 | Saturday, August 12, 2023 |
33 | Sunday, August 13, 2023 | Saturday, August 19, 2023 |
34 | Sunday, August 20, 2023 | Saturday, August 26, 2023 |
35 | Sunday, August 27, 2023 | Saturday, September 2, 2023 |
36 | Sunday, September 3, 2023 | Saturday, September 9, 2023 |
37 | Sunday, September 10, 2023 | Saturday, September 16, 2023 |
38 | Sunday, September 17, 2023 | Saturday, September 23, 2023 |
39 | Sunday, September 24, 2023 | Saturday, September 30, 2023 |
40 | Sunday, October 1, 2023 | Saturday, October 7, 2023 |
41 | Sunday, October 8, 2023 | Saturday, October 14, 2023 |
42 | Sunday, October 15, 2023 | Saturday, October 21, 2023 |
43 | Sunday, October 22, 2023 | Saturday, October 28, 2023 |
44 | Sunday, October 29, 2023 | Saturday, November 4, 2023 |
45 | Sunday, November 5, 2023 | Saturday, November 11, 2023 |
46 | Sunday, November 12, 2023 | Saturday, November 18, 2023 |
47 | Sunday, November 19, 2023 | Saturday, November 25, 2023 |
48 | Sunday, November 26, 2023 | Saturday, December 2, 2023 |
49 | Sunday, December 3, 2023 | Saturday, December 9, 2023 |
50 | Sunday, December 10, 2023 | Saturday, December 16, 2023 |
51 | Sunday, December 17, 2023 | Saturday, December 23, 2023 |
52 | Sunday, December 24, 2023 | Saturday, December 30, 2023 |
53 | Sunday, December 31, 2023 | Sunday, December 31, 2023 |
The "American" calendar weeks for 2023 are used in the USA, Canada and most Latin American countries, Australia, Japan, Israel, South Korea and others. Unlike the otherwise internationally standardised ISO weeks, the American calendar weeks start on Sundays instead of Mondays and end on Saturdays. However, the first calendar week always begins on the 1st of January and the last always ends on the 31st of December. These two weeks can have fewer than seven days. There are always 53 calendar weeks, except in a leap year where 31st December is a Sunday. As a result, such a year will have 54 calendar weeks.
Calculation of any calendar weeks 2023
Source information
As source for the information in the "Week Numbers" category, we have used in particular:
Last update on July 2, 2022
The pages of the "Week Numbers" category were last editorially reviewed by Michael Mühl on July 2, 2022. They all correspond to the current status.
Previous changes on June 25, 2021
- Publication of the Week Number Calculator
- Editorial revision of all texts in this category