"Wed, 15 May 2024 19:59:36"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240515
Only TIME
19:59:36
General datetime
2024-05-15 19:59:36Z
For Database
2024-05-15 19:59:36
For HTTP1.1
Wed, 15 May 2024 19:59:36 GMT