<Tr> <Th> Norwegian Nynorsk </Th> <Td> sundag / søndag </Td> <Td> måndag </Td> <Td> tysdag </Td> <Td> onsdag </Td> <Td> torsdag </Td> <Td> fredag </Td> <Td> laurdag </Td> </Tr> <Tr> <Th> Danish </Th> <Td> søndag </Td> <Td> mandag </Td> <Td> tirsdag </Td> <Td> onsdag </Td> <Td> torsdag </Td> <Td> fredag </Td> <Td> lørdag </Td> </Tr> <Tr> <Th> Swedish </Th> <Td> söndag </Td> <Td> måndag </Td> <Td> tisdag </Td> <Td> onsdag </Td> <Td> torsdag </Td> <Td> fredag </Td> <Td> lördag </Td> </Tr> <P> The 12 - hour clock is a time convention popularized by the Romans in which the 24 hours of the day are divided into two periods . The Romans divided the day into 12 equal hours, A.M. (ante - meridiem, meaning before midday) and P.M. (post-meridiem, meaning past midday). The Romans also started the practice used worldwide today of a new day beginning at midnight . </P>

Rome's most significant achievement during the republic