All 52 Weeks of 1900
| Week | Starts (Mon) | Ends (Sun) | Federal holidays |
|---|---|---|---|
| 1 | Jan 1, 1900 | Jan 7, 1900 | New Year's Day |
| 2 | Jan 8, 1900 | Jan 14, 1900 | — |
| 3 | Jan 15, 1900 | Jan 21, 1900 | MLK Day |
| 4 | Jan 22, 1900 | Jan 28, 1900 | — |
| 5 | Jan 29, 1900 | Feb 4, 1900 | — |
| 6 | Feb 5, 1900 | Feb 11, 1900 | — |
| 7 | Feb 12, 1900 | Feb 18, 1900 | — |
| 8 | Feb 19, 1900 | Feb 25, 1900 | Presidents' Day |
| 9 | Feb 26, 1900 | Mar 4, 1900 | — |
| 10 | Mar 5, 1900 | Mar 11, 1900 | — |
| 11 | Mar 12, 1900 | Mar 18, 1900 | — |
| 12 | Mar 19, 1900 | Mar 25, 1900 | — |
| 13 | Mar 26, 1900 | Apr 1, 1900 | — |
| 14 | Apr 2, 1900 | Apr 8, 1900 | — |
| 15 | Apr 9, 1900 | Apr 15, 1900 | — |
| 16 | Apr 16, 1900 | Apr 22, 1900 | — |
| 17 | Apr 23, 1900 | Apr 29, 1900 | — |
| 18 | Apr 30, 1900 | May 6, 1900 | — |
| 19 | May 7, 1900 | May 13, 1900 | — |
| 20 | May 14, 1900 | May 20, 1900 | — |
| 21 | May 21, 1900 | May 27, 1900 | — |
| 22 | May 28, 1900 | Jun 3, 1900 | Memorial Day |
| 23 | Jun 4, 1900 | Jun 10, 1900 | — |
| 24 | Jun 11, 1900 | Jun 17, 1900 | — |
| 25 | Jun 18, 1900 | Jun 24, 1900 | — |
| 26 | Jun 25, 1900 | Jul 1, 1900 | — |
| 27 | Jul 2, 1900 | Jul 8, 1900 | Independence Day |
| 28 | Jul 9, 1900 | Jul 15, 1900 | — |
| 29 | Jul 16, 1900 | Jul 22, 1900 | — |
| 30 | Jul 23, 1900 | Jul 29, 1900 | — |
| 31 | Jul 30, 1900 | Aug 5, 1900 | — |
| 32 | Aug 6, 1900 | Aug 12, 1900 | — |
| 33 | Aug 13, 1900 | Aug 19, 1900 | — |
| 34 | Aug 20, 1900 | Aug 26, 1900 | — |
| 35 | Aug 27, 1900 | Sep 2, 1900 | — |
| 36 | Sep 3, 1900 | Sep 9, 1900 | Labor Day |
| 37 | Sep 10, 1900 | Sep 16, 1900 | — |
| 38 | Sep 17, 1900 | Sep 23, 1900 | — |
| 39 | Sep 24, 1900 | Sep 30, 1900 | — |
| 40 | Oct 1, 1900 | Oct 7, 1900 | — |
| 41 | Oct 8, 1900 | Oct 14, 1900 | Columbus Day |
| 42 | Oct 15, 1900 | Oct 21, 1900 | — |
| 43 | Oct 22, 1900 | Oct 28, 1900 | — |
| 44 | Oct 29, 1900 | Nov 4, 1900 | — |
| 45 | Nov 5, 1900 | Nov 11, 1900 | Veterans Day |
| 46 | Nov 12, 1900 | Nov 18, 1900 | — |
| 47 | Nov 19, 1900 | Nov 25, 1900 | Thanksgiving |
| 48 | Nov 26, 1900 | Dec 2, 1900 | — |
| 49 | Dec 3, 1900 | Dec 9, 1900 | — |
| 50 | Dec 10, 1900 | Dec 16, 1900 | — |
| 51 | Dec 17, 1900 | Dec 23, 1900 | — |
| 52 | Dec 24, 1900 | Dec 30, 1900 | Christmas Day |
1900 Week Numbers FAQ
How many weeks are in 1900?
1900 has 52 ISO weeks. Week 1 runs from Monday, January 1, 1900 to Sunday, January 7, 1900, and week 52 ends on Sunday, December 30, 1900.
What week number is January 1, 1900?
January 1, 1900 is a Monday in week 1 of 1900.
How are ISO week numbers counted?
ISO 8601 weeks start on Monday. Week 1 is the week that contains the first Thursday of the year, which is the same as the week that contains January 4. A year has 52 weeks, or 53 when it starts on a Thursday (or on a Wednesday in a leap year).
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