"Mon, 19 Jan 1970 05:32:55"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700119
Only TIME
05:32:55
General datetime
1970-01-19 05:32:55Z
For Database
1970-01-19 05:32:55
For HTTP1.1
Mon, 19 Jan 1970 05:32:55 GMT