"Thu, 29 Jan 1970 00:52:56"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700129
Only TIME
00:52:56
General datetime
1970-01-29 00:52:56Z
For Database
1970-01-29 00:52:56
For HTTP1.1
Thu, 29 Jan 1970 00:52:56 GMT