Class DateTimePicker

const dateTimePicker =
    CardService.newDateTimePicker()
        .setTitle('Enter the date and time.')
        .setFieldName('date_time_field')
        // Set default value as Jan 1, 2018, 3:00 AM UTC. Either a number or
        // string is acceptable.
        .setValueInMsSinceEpoch(1514775600)
        // EDT time is 5 hours behind UTC.
        .setTimeZoneOffsetInMins(-5 * 60)
        .setOnChangeAction(
            CardService.newAction().setFunctionName('handleDateTimeChange'),
        );