"Sat, 18 May 2024 12:35:57"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240518
Only TIME
12:35:57
General datetime
2024-05-18 12:35:57Z
For Database
2024-05-18 12:35:57
For HTTP1.1
Sat, 18 May 2024 12:35:57 GMT