"Fri, 21 Jun 2024 23:45:49"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
23:45:49
General datetime
2024-06-21 23:45:49Z
For Database
2024-06-21 23:45:49
For HTTP1.1
Fri, 21 Jun 2024 23:45:49 GMT