"Sat, 25 May 2024 18:21:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240525
Only TIME
18:21:21
General datetime
2024-05-25 18:21:21Z
For Database
2024-05-25 18:21:21
For HTTP1.1
Sat, 25 May 2024 18:21:21 GMT