"Wed, 28 Jan 1970 00:02:45"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700128
Only TIME
00:02:45
General datetime
1970-01-28 00:02:45Z
For Database
1970-01-28 00:02:45
For HTTP1.1
Wed, 28 Jan 1970 00:02:45 GMT