Mongolians have a long tradition and custom of naming their children after days of the week. Tibetan names of solar calendar for the days of the week like Даваа, Мягмар, Лхагва, Пүрэв, Баасан, Бямба, Ням and Sanskrit names of lunar calendar like Сумьяа, Ангараг, Буд, Бархасбадь, Сугар, Санчир, Адьяа are common names.