"Sat, 20 Apr 2024 18:43:16"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240420
Only TIME
18:43:16
General datetime
2024-04-20 18:43:16Z
For Database
2024-04-20 18:43:16
For HTTP1.1
Sat, 20 Apr 2024 18:43:16 GMT