"Sat, 19 Oct 2024 18:40:14"

Convert date and time to unixtime.

Another datetime format string at UTC

YYYYMMDD
20241019

Only TIME
18:40:14

General datetime
2024-10-19 18:40:14Z

For Database
2024-10-19 18:40:14

For HTTP1.1
Sat, 19 Oct 2024 18:40:14 GMT