On Ram Thang 7 (full-moon day), it is taboo for Vietnamese people to purchase clothes, unless they are for the dead, based on the concept that life on the earth is the same as in the hades. Ram Thang 7 is the second most important festival in Vietnam after Tet, Lunar New Year. It takes place on the 14th to 15th of the seventh lunar month, and is a time to give thanks and praise to parents and ancestors.