"Sat, 21 Dec 2024 18:53:55"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
18:53:55
General datetime
2024-12-21 18:53:55Z
For Database
2024-12-21 18:53:55
For HTTP1.1
Sat, 21 Dec 2024 18:53:55 GMT