"Sat, 21 Dec 2024 09:39:59"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
09:39:59
General datetime
2024-12-21 09:39:59Z
For Database
2024-12-21 09:39:59
For HTTP1.1
Sat, 21 Dec 2024 09:39:59 GMT