"Wed, 14 Jan 1970 15:13:00"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700114
Only TIME
15:13:00
General datetime
1970-01-14 15:13:00Z
For Database
1970-01-14 15:13:00
For HTTP1.1
Wed, 14 Jan 1970 15:13:00 GMT