"Sat, 21 Dec 2024 12:54:45"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
12:54:45
General datetime
2024-12-21 12:54:45Z
For Database
2024-12-21 12:54:45
For HTTP1.1
Sat, 21 Dec 2024 12:54:45 GMT