"Fri, 21 Jun 2024 10:45:00"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
10:45:00
General datetime
2024-06-21 10:45:00Z
For Database
2024-06-21 10:45:00
For HTTP1.1
Fri, 21 Jun 2024 10:45:00 GMT