DATETIME_PARSE() function, you need to include the second parameter that indicates the format of your date/time text string. If you don’t include that second string, Airtable assumes that your date has the month, then day, then year. But your dates have the day before the month. You also have times in a 24 hour clock instead of am/pm.
See the formula field reference for DATETIME_PARSE() and the format specifier for more info.