January calendar| Day | January | Day of the year | Week number of year |
|---|
| Friday | Jan 1, 2010 | 0 | 53 |
| Saturday | Jan 2, 2010 | 1 | 53 |
| Sunday | Jan 3, 2010 | 2 | 53 |
| Monday | Jan 4, 2010 | 3 | 01 |
| Tuesday | Jan 5, 2010 | 4 | 01 |
| Wednesday | Jan 6, 2010 | 5 | 01 |
| Thursday | Jan 7, 2010 | 6 | 01 |
| Friday | Jan 8, 2010 | 7 | 01 |
| Saturday | Jan 9, 2010 | 8 | 01 |
| Sunday | Jan 10, 2010 | 9 | 01 |
| Monday | Jan 11, 2010 | 10 | 02 |
| Tuesday | Jan 12, 2010 | 11 | 02 |
| Wednesday | Jan 13, 2010 | 12 | 02 |
| Thursday | Jan 14, 2010 | 13 | 02 |
| Friday | Jan 15, 2010 | 14 | 02 |
| Saturday | Jan 16, 2010 | 15 | 02 |
| Sunday | Jan 17, 2010 | 16 | 02 |
| Monday | Jan 18, 2010 | 17 | 03 |
| Tuesday | Jan 19, 2010 | 18 | 03 |
| Wednesday | Jan 20, 2010 | 19 | 03 |
| Thursday | Jan 21, 2010 | 20 | 03 |
| Friday | Jan 22, 2010 | 21 | 03 |
| Saturday | Jan 23, 2010 | 22 | 03 |
| Sunday | Jan 24, 2010 | 23 | 03 |
| Monday | Jan 25, 2010 | 24 | 04 |
| Tuesday | Jan 26, 2010 | 25 | 04 |
| Wednesday | Jan 27, 2010 | 26 | 04 |
| Thursday | Jan 28, 2010 | 27 | 04 |
| Friday | Jan 29, 2010 | 28 | 04 |
| Saturday | Jan 30, 2010 | 29 | 04 |
| Sunday | Jan 31, 2010 | 30 | 04 |
