"Mon, 19 Jan 1970 01:28:45"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700119
Only TIME
01:28:45
General datetime
1970-01-19 01:28:45Z
For Database
1970-01-19 01:28:45
For HTTP1.1
Mon, 19 Jan 1970 01:28:45 GMT