"Thu, 01 Jan 1970 07:25:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700101
Only TIME
07:25:20
General datetime
1970-01-01 07:25:20Z
For Database
1970-01-01 07:25:20
For HTTP1.1
Thu, 01 Jan 1970 07:25:20 GMT