"Thu, 08 Jan 1970 00:38:58"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700108
Only TIME
00:38:58
General datetime
1970-01-08 00:38:58Z
For Database
1970-01-08 00:38:58
For HTTP1.1
Thu, 08 Jan 1970 00:38:58 GMT