"Sat, 21 Dec 2024 15:23:00"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
15:23:00
General datetime
2024-12-21 15:23:00Z
For Database
2024-12-21 15:23:00
For HTTP1.1
Sat, 21 Dec 2024 15:23:00 GMT