"Sun, 16 Jun 2024 09:40:18"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240616
Only TIME
09:40:18
General datetime
2024-06-16 09:40:18Z
For Database
2024-06-16 09:40:18
For HTTP1.1
Sun, 16 Jun 2024 09:40:18 GMT