"Wed, 14 Jan 1970 00:02:38"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700114
Only TIME
00:02:38
General datetime
1970-01-14 00:02:38Z
For Database
1970-01-14 00:02:38
For HTTP1.1
Wed, 14 Jan 1970 00:02:38 GMT