"Sat, 18 May 2024 12:34:30"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240518
Only TIME
12:34:30
General datetime
2024-05-18 12:34:30Z
For Database
2024-05-18 12:34:30
For HTTP1.1
Sat, 18 May 2024 12:34:30 GMT