"Thu, 29 Jan 1970 18:14:59"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700129
Only TIME
18:14:59
General datetime
1970-01-29 18:14:59Z
For Database
1970-01-29 18:14:59
For HTTP1.1
Thu, 29 Jan 1970 18:14:59 GMT