"Thu, 08 Jan 1970 02:46:42"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700108
Only TIME
02:46:42
General datetime
1970-01-08 02:46:42Z
For Database
1970-01-08 02:46:42
For HTTP1.1
Thu, 08 Jan 1970 02:46:42 GMT