"Thu, 29 Jan 1970 07:49:55"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700129
Only TIME
07:49:55
General datetime
1970-01-29 07:49:55Z
For Database
1970-01-29 07:49:55
For HTTP1.1
Thu, 29 Jan 1970 07:49:55 GMT