If you have a dropdown based on a Date/Time field in your Search, you can only list the time and not the date part in your search form dropdown.
- Edit your DataPage and go to Search and Report Wizard - Configure Search Fields.
- Go to the Advanced tab and click Edit in the Formatting field.
- Select Custom, choose Time in the Format Type, and select the following format in the Time field: 5:09:03 PM.
- Preview and save the DataPage.