Week & Day Numbers for 2004
53
Weeks
366
Days
262
Working
Yes
Leap Year
Check Another Year
Quick Facts
- 2004 has 366 days (leap year).
- 53 ISO weeks.
- 262 working days (Monday–Friday).
- January 1 falls on a Thursday.
- December 31 falls on a Friday.
- Longest day: ~June 21 (summer solstice, N. Hemisphere).
- Shortest day: ~December 21 (winter solstice).
Week Number Calendar 2004
| Week | Start (Mon) | End (Sun) |
|---|---|---|
| W1 | Dec 29 | Jan 4, 2004 |
| W2 | Jan 5 | Jan 11, 2004 |
| W3 | Jan 12 | Jan 18, 2004 |
| W4 | Jan 19 | Jan 25, 2004 |
| W5 | Jan 26 | Feb 1, 2004 |
| W6 | Feb 2 | Feb 8, 2004 |
| W7 | Feb 9 | Feb 15, 2004 |
| W8 | Feb 16 | Feb 22, 2004 |
| W9 | Feb 23 | Feb 29, 2004 |
| W10 | Mar 1 | Mar 7, 2004 |
| W11 | Mar 8 | Mar 14, 2004 |
| W12 | Mar 15 | Mar 21, 2004 |
| W13 | Mar 22 | Mar 28, 2004 |
| W14 | Mar 29 | Apr 4, 2004 |
| W15 | Apr 5 | Apr 11, 2004 |
| W16 | Apr 12 | Apr 18, 2004 |
| W17 | Apr 19 | Apr 25, 2004 |
| W18 | Apr 26 | May 2, 2004 |
| W19 | May 3 | May 9, 2004 |
| W20 | May 10 | May 16, 2004 |
| W21 | May 17 | May 23, 2004 |
| W22 | May 24 | May 30, 2004 |
| W23 | May 31 | Jun 6, 2004 |
| W24 | Jun 7 | Jun 13, 2004 |
| W25 | Jun 14 | Jun 20, 2004 |
| W26 | Jun 21 | Jun 27, 2004 |
| W27 | Jun 28 | Jul 4, 2004 |
| W28 | Jul 5 | Jul 11, 2004 |
| W29 | Jul 12 | Jul 18, 2004 |
| W30 | Jul 19 | Jul 25, 2004 |
| W31 | Jul 26 | Aug 1, 2004 |
| W32 | Aug 2 | Aug 8, 2004 |
| W33 | Aug 9 | Aug 15, 2004 |
| W34 | Aug 16 | Aug 22, 2004 |
| W35 | Aug 23 | Aug 29, 2004 |
| W36 | Aug 30 | Sep 5, 2004 |
| W37 | Sep 6 | Sep 12, 2004 |
| W38 | Sep 13 | Sep 19, 2004 |
| W39 | Sep 20 | Sep 26, 2004 |
| W40 | Sep 27 | Oct 3, 2004 |
| W41 | Oct 4 | Oct 10, 2004 |
| W42 | Oct 11 | Oct 17, 2004 |
| W43 | Oct 18 | Oct 24, 2004 |
| W44 | Oct 25 | Oct 31, 2004 |
| W45 | Nov 1 | Nov 7, 2004 |
| W46 | Nov 8 | Nov 14, 2004 |
| W47 | Nov 15 | Nov 21, 2004 |
| W48 | Nov 22 | Nov 28, 2004 |
| W49 | Nov 29 | Dec 5, 2004 |
| W50 | Dec 6 | Dec 12, 2004 |
| W51 | Dec 13 | Dec 19, 2004 |
| W52 | Dec 20 | Dec 26, 2004 |
| W53 | Dec 27 | Jan 2, 2005 |
Day Numbers by Month
| Month | Days | Day Range |
|---|---|---|
| January | 31 | 1 – 31 |
| February | 29 | 32 – 60 |
| March | 31 | 61 – 91 |
| April | 30 | 92 – 121 |
| May | 31 | 122 – 152 |
| June | 30 | 153 – 182 |
| July | 31 | 183 – 213 |
| August | 31 | 214 – 244 |
| September | 30 | 245 – 274 |
| October | 31 | 275 – 305 |
| November | 30 | 306 – 335 |
| December | 31 | 336 – 366 |
Nearby Years
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Frequently Asked Questions
How many weeks are in 2004?
53 ISO weeks.
How many days are in 2004?
366 days. It is a leap year.
How many working days are in 2004?
262 working days (Monday–Friday).
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