"Wed, 25 Feb 1970 12:03:04"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700225
Only TIME
12:03:04
General datetime
1970-02-25 12:03:04Z
For Database
1970-02-25 12:03:04
For HTTP1.1
Wed, 25 Feb 1970 12:03:04 GMT