"Fri, 30 Jan 1970 07:47:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700130
Only TIME
07:47:20
General datetime
1970-01-30 07:47:20Z
For Database
1970-01-30 07:47:20
For HTTP1.1
Fri, 30 Jan 1970 07:47:20 GMT