"Sat, 03 Jan 1970 00:58:32"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700103
Only TIME
00:58:32
General datetime
1970-01-03 00:58:32Z
For Database
1970-01-03 00:58:32
For HTTP1.1
Sat, 03 Jan 1970 00:58:32 GMT