text: import CivilTime from '../types/CivilTime';
  import CivilDate from '../types/CivilDate';
  import CivilDateTime from '../types/CivilDateTime';
  
  CivilTime.prototype.atDate = function (year, month, day) {
      return new CivilDateTime(new CivilDate(year, month, day), this);
  };
  