"Sat, 18 May 2024 12:34:19"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240518
Only TIME
12:34:19
General datetime
2024-05-18 12:34:19Z
For Database
2024-05-18 12:34:19
For HTTP1.1
Sat, 18 May 2024 12:34:19 GMT