<Table> <Tr> <Th colspan="2"> Season </Th> <Th colspan="2"> Episodes </Th> <Th colspan="2"> Originally aired </Th> <Th colspan="2"> Nielsen ratings </Th> </Tr> <Tr> <Th> First aired </Th> <Th> Last aired </Th> <Th> Rank </Th> <Th> Average viewership ( in millions ) </Th> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 18 </Td> <Td colspan="1"> September 20 , 2016 ( 2016 - 09 - 20 ) </Td> <Td> March 14 , 2017 ( 2017 - 03 - 14 ) </Td> <Td> 6 </Td> <Td> 14.70 </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 18 </Td> <Td colspan="1"> September 26 , 2017 ( 2017 - 09 - 26 ) </Td> <Td> TBA </Td> <Td> TBA </Td> <Td> TBA </Td> </Tr> </Table>
<Table> <Tr> <Th colspan="2"> Season </Th> <Th colspan="2"> Episodes </Th> <Th colspan="2"> Originally aired </Th> <Th colspan="2"> Nielsen ratings </Th> </Tr> <Tr> <Th> First aired </Th> <Th> Last aired </Th> <Th> Rank </Th> <Th> Average viewership ( in millions ) </Th> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 18 </Td> <Td colspan="1"> September 20 , 2016 ( 2016 - 09 - 20 ) </Td> <Td> March 14 , 2017 ( 2017 - 03 - 14 ) </Td> <Td> 6 </Td> <Td> 14.70 </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 18 </Td> <Td colspan="1"> September 26 , 2017 ( 2017 - 09 - 26 ) </Td> <Td> TBA </Td> <Td> TBA </Td> <Td> TBA </Td> </Tr> </Table>
how many episodes are in season 1 of this is us
how many episodes are in season 1 of this is us
18
18