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til/postgres/day-of-week-for-a-date.md
2016-01-29 22:02:36 -06:00

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# Day Of Week For A Date
Given a `date` in PostgreSQL
```sql
> select '2050-1-1'::date;
date
------------
2050-01-01
```
you can determine the day of the week for that date with the `date_part()`
function
```sql
> select date_part('dow', '2050-1-1'::date);
date_part
-----------
6
```
The days of week are `0` through `6`, `0` being Sunday and `6` being
Saturday.
[source](http://www.postgresql.org/docs/current/static/functions-datetime.html)