"Mon, 19 Jan 1970 00:54:58"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700119
Only TIME
00:54:58
General datetime
1970-01-19 00:54:58Z
For Database
1970-01-19 00:54:58
For HTTP1.1
Mon, 19 Jan 1970 00:54:58 GMT