"Thu, 29 Jan 1970 07:46:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700129
Only TIME
07:46:20
General datetime
1970-01-29 07:46:20Z
For Database
1970-01-29 07:46:20
For HTTP1.1
Thu, 29 Jan 1970 07:46:20 GMT