"Fri, 12 Jun 1970 07:11:27"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700612
Only TIME
07:11:27
General datetime
1970-06-12 07:11:27Z
For Database
1970-06-12 07:11:27
For HTTP1.1
Fri, 12 Jun 1970 07:11:27 GMT