<Tr> <Th> Czech </Th> <Td> pondělí or pondělek </Td> <Td> úterý or úterek </Td> <Td> středa </Td> <Td> čtvrtek </Td> <Td> pátek </Td> <Td> sobota </Td> <Td> neděle </Td> </Tr> <Tr> <Th> Slovene </Th> <Td> ponedeljek </Td> <Td> torek </Td> <Td> sreda </Td> <Td> četrtek </Td> <Td> petek </Td> <Td> sobota </Td> <Td> nedelja </Td> </Tr> <Tr> <Th> Bosnian </Th> <Td> ponedjeljak </Td> <Td> utorak </Td> <Td> srijeda </Td> <Td> četvrtak </Td> <Td> petak </Td> <Td> subota </Td> <Td> nedjelja </Td> </Tr> <Tr> <Th> Croatian </Th> <Td> ponedjeljak </Td> <Td> utorak </Td> <Td> srijeda </Td> <Td> četvrtak </Td> <Td> petak </Td> <Td> subota </Td> <Td> nedjelja </Td> </Tr>

Where do the names of days of the week come from