"Sun, 18 Jan 1970 01:25:13"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700118
Only TIME
01:25:13
General datetime
1970-01-18 01:25:13Z
For Database
1970-01-18 01:25:13
For HTTP1.1
Sun, 18 Jan 1970 01:25:13 GMT