"Sat, 14 Dec 2024 14:18:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241214
Only TIME
14:18:21
General datetime
2024-12-14 14:18:21Z
For Database
2024-12-14 14:18:21
For HTTP1.1
Sat, 14 Dec 2024 14:18:21 GMT