"Thu, 01 Jan 1970 00:02:51"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700101
Only TIME
00:02:51
General datetime
1970-01-01 00:02:51Z
For Database
1970-01-01 00:02:51
For HTTP1.1
Thu, 01 Jan 1970 00:02:51 GMT