Day of Week
Returns an integer that represents the day of the week for a specific date.
| date | day_of_week |
|---|---|
| 2015-01-21 15:30:00 | 3 |
| 2015-01-21 00:00:00 | 3 |
| 2015-01-31 10:00:30 | 6 |
| 2015-02-03 15:30:00 | 2 |
| 2016-01-21 23:59:59 | 4 |
| 2015-10-31 23:59:59 | 6 |
| 2015-12-03 00:00:00 | 4 |
| 2016-01-11 03:30:00 | 1 |
| 2016-01-11 03:30:00 | 1 |