"Sat, 10 Jan 1970 01:00:49"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700110
Only TIME
01:00:49
General datetime
1970-01-10 01:00:49Z
For Database
1970-01-10 01:00:49
For HTTP1.1
Sat, 10 Jan 1970 01:00:49 GMT