When a Thai couple plan to get married, they need to look for “an auspicious time” (ฤกษ์ rêrk) to get married by consulting a monk or an astrologer to determine the most auspicious day. The couple’s birthdays and time of birth are needed to use for the calculation. Astrologers use lunar calendars to fix auspicious days for weddings, journeys, the dedication of a new house, and similar important occasions.