"Sat, 21 Dec 2024 02:38:45"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
02:38:45
General datetime
2024-12-21 02:38:45Z
For Database
2024-12-21 02:38:45
For HTTP1.1
Sat, 21 Dec 2024 02:38:45 GMT