Automatically apply the organisation’s or layer’s date format settings to the filter and pop-ups in Instant Apps. Or, provide built-in options to customise date formats within Instant Apps. For example, allow dates to be formatted to DD/MM/YYYY.
Related to query - https://community.esri.com/t5/arcgis-instant-apps-questions/instant-apps-format-date-filter-to-dd-mm...