"Thu, 01 Jan 1970 11:20:29"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700101
Only TIME
11:20:29
General datetime
1970-01-01 11:20:29Z
For Database
1970-01-01 11:20:29
For HTTP1.1
Thu, 01 Jan 1970 11:20:29 GMT