"Sat, 11 May 2024 20:15:09"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240511
Only TIME
20:15:09
General datetime
2024-05-11 20:15:09Z
For Database
2024-05-11 20:15:09
For HTTP1.1
Sat, 11 May 2024 20:15:09 GMT