"Wed, 15 May 2024 09:40:19"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240515
Only TIME
09:40:19
General datetime
2024-05-15 09:40:19Z
For Database
2024-05-15 09:40:19
For HTTP1.1
Wed, 15 May 2024 09:40:19 GMT