January calendar| Day | January | Day of the year | Week number of year |
|---|
| Saturday | Jan 1, 2000 | 0 | 52 |
| Sunday | Jan 2, 2000 | 1 | 52 |
| Monday | Jan 3, 2000 | 2 | 01 |
| Tuesday | Jan 4, 2000 | 3 | 01 |
| Wednesday | Jan 5, 2000 | 4 | 01 |
| Thursday | Jan 6, 2000 | 5 | 01 |
| Friday | Jan 7, 2000 | 6 | 01 |
| Saturday | Jan 8, 2000 | 7 | 01 |
| Sunday | Jan 9, 2000 | 8 | 01 |
| Monday | Jan 10, 2000 | 9 | 02 |
| Tuesday | Jan 11, 2000 | 10 | 02 |
| Wednesday | Jan 12, 2000 | 11 | 02 |
| Thursday | Jan 13, 2000 | 12 | 02 |
| Friday | Jan 14, 2000 | 13 | 02 |
| Saturday | Jan 15, 2000 | 14 | 02 |
| Sunday | Jan 16, 2000 | 15 | 02 |
| Monday | Jan 17, 2000 | 16 | 03 |
| Tuesday | Jan 18, 2000 | 17 | 03 |
| Wednesday | Jan 19, 2000 | 18 | 03 |
| Thursday | Jan 20, 2000 | 19 | 03 |
| Friday | Jan 21, 2000 | 20 | 03 |
| Saturday | Jan 22, 2000 | 21 | 03 |
| Sunday | Jan 23, 2000 | 22 | 03 |
| Monday | Jan 24, 2000 | 23 | 04 |
| Tuesday | Jan 25, 2000 | 24 | 04 |
| Wednesday | Jan 26, 2000 | 25 | 04 |
| Thursday | Jan 27, 2000 | 26 | 04 |
| Friday | Jan 28, 2000 | 27 | 04 |
| Saturday | Jan 29, 2000 | 28 | 04 |
| Sunday | Jan 30, 2000 | 29 | 04 |
| Monday | Jan 31, 2000 | 30 | 05 |
