"Sat, 18 May 2024 09:57:11"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240518
Only TIME
09:57:11
General datetime
2024-05-18 09:57:11Z
For Database
2024-05-18 09:57:11
For HTTP1.1
Sat, 18 May 2024 09:57:11 GMT