This issue is related to a limitation of the field type 'Date/Time'. The format for this field type in the database is yyyy-MM-dd'T'HH:mm:ss.SSSZ the date is in UTC time, so when a value is imported it will formatted to that time format and converted to UTC time based on your time zone.
Workaround: Modify the date value in the import file to account for the format and time zone differences. For example, if your time zone is UTC-6 set the date as 2024-03-19T18:00Z in the file. This will set the date as Mar 19, 2024, 12:00 PM in the system after import.