"Wed, 15 May 2024 12:14:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240515
Only TIME
12:14:21
General datetime
2024-05-15 12:14:21Z
For Database
2024-05-15 12:14:21
For HTTP1.1
Wed, 15 May 2024 12:14:21 GMT