"Fri, 27 Feb 1970 12:03:10"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700227
Only TIME
12:03:10
General datetime
1970-02-27 12:03:10Z
For Database
1970-02-27 12:03:10
For HTTP1.1
Fri, 27 Feb 1970 12:03:10 GMT