"Thu, 15 Jan 1970 12:26:37"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700115
Only TIME
12:26:37
General datetime
1970-01-15 12:26:37Z
For Database
1970-01-15 12:26:37
For HTTP1.1
Thu, 15 Jan 1970 12:26:37 GMT