"Sat, 21 Dec 2024 04:18:11"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
04:18:11
General datetime
2024-12-21 04:18:11Z
For Database
2024-12-21 04:18:11
For HTTP1.1
Sat, 21 Dec 2024 04:18:11 GMT