"Fri, 16 Jan 1970 07:51:35"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700116
Only TIME
07:51:35
General datetime
1970-01-16 07:51:35Z
For Database
1970-01-16 07:51:35
For HTTP1.1
Fri, 16 Jan 1970 07:51:35 GMT