#slider-dayandhour .rc-slider-mark {
  top: -28px !important;   /* negative moves it upward */
}

#slider-dayandhour .rc-slider-mark-text {
  transform: none !important;
  white-space: nowrap !important;
  font-size: 11px !important;
}

#slider-dayandhour .rc-slider {
  padding-bottom: 2px;  /* default is 5px */
}