cartodb-4.42/lib/assets/javascripts/builder/components/date-picker-range/date-picker-form.tpl

<form>
  <div class="DatePicker-timersFrom">
    <div class="DatePicker-timersHour">
      <label class="DatePicker-timersLabel u-upperCase"><%- _t('components.datepicker.hour') %></label>
      <div data-editors="fromHour"></div>
    </div>
    <div class="DatePicker-timersMin">
      <label class="DatePicker-timersLabel u-upperCase"><%- _t('components.datepicker.min') %></label>
      <div data-editors="fromMin"></div>
    </div>
  </div>
  <div class="DatePicker-timersTo">
    <div class="DatePicker-timersHour">
      <label class="DatePicker-timersLabel u-upperCase"><%- _t('components.datepicker.hour') %></label>
      <div data-editors="toHour"></div>
    </div>
    <div class="DatePicker-timersMin">
      <label class="DatePicker-timersLabel u-upperCase"><%- _t('components.datepicker.min') %></label>
      <div data-editors="toMin"></div>
    </div>
  </div>
</form>