<Tr> <Th> </Th> <Th> Sunday the Sun (Aditya, Ravi) </Th> <Th> Monday the Moon (Soma, Chandra, Indu) </Th> <Th> Tuesday Mars (Mangala) </Th> <Th> Wednesday Mercury (Budha) </Th> <Th> Thursday Jupiter (Bṛhaspati, Guru) </Th> <Th> Friday Venus (Shukra) </Th> <Th> Saturday Saturn (Shani) </Th> </Tr> <Tr> <Th> Mongolian </Th> <Td> адъяа ad'yaa </Td> <Td> сумъяа sum'yaa </Td> <Td> ангараг angarag </Td> <Td> буд bud </Td> <Td> бархабадь barhabad' </Td> <Td> сугар sugar </Td> <Td> санчир sanchir </Td> </Tr> <P> The East Asian naming system for the days of the week closely parallels that of the Latin system and is ordered after the "Seven Luminaries" (七曜 qī yào), which consists of the Sun, Moon and the five planets visible to the naked eye . </P> <P> The Chinese seem to have adopted the seven - day week from the Hellenistic system by the 4th century, although by which route is not entirely clear . It was again transmitted to China in the 8th century by Manichaeans, via the country of Kang (a Central Asian polity near Samarkand). The 4th - century date, according to the Cihai encyclopedia, is due to a reference to Fan Ning (範 寧 / 范 宁), an astrologer of the Jin Dynasty . The renewed adoption from Manichaeans in the 8th century (Tang Dynasty) is documented with the writings of the Chinese Buddhist monk Yi Jing and the Ceylonese Buddhist monk Bu Kong . </P>

Where do days of the week get their names