"Wed, 14 Jan 1970 23:37:58"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700114
Only TIME
23:37:58
General datetime
1970-01-14 23:37:58Z
For Database
1970-01-14 23:37:58
For HTTP1.1
Wed, 14 Jan 1970 23:37:58 GMT