<Table> UT date and time of equinoxes and solstices on Earth <Tr> <Th> event </Th> <Th_colspan="2"> equinox </Th> <Th_colspan="2"> solstice </Th> <Th_colspan="2"> equinox </Th> <Th_colspan="2"> solstice </Th> </Tr> <Tr> <Th> month </Th> <Th_colspan="2"> March </Th> <Th_colspan="2"> June </Th> <Th_colspan="2"> September </Th> <Th_colspan="2"> December </Th> </Tr> <Tr> <Th> year </Th> </Tr> <Tr> <Th> day </Th> <Th> time </Th> <Th> day </Th> <Th> time </Th> <Th> day </Th> <Th> time </Th> <Th> day </Th> <Th> time </Th> </Tr> <Tr> <Th> </Th> <Td> 20 </Td> <Td> 17: 32 </Td> <Td> 21 </Td> <Td> 11: 28 </Td> <Td> 23 </Td> <Td> 03: 09 </Td> <Td> 21 </Td> <Td> 23: 38 </Td> </Tr> <Tr> <Th> 2011 </Th> <Td> 20 </Td> <Td> 23: 21 </Td> <Td> 21 </Td> <Td> 17: 16 </Td> <Td> 23 </Td> <Td> 09: 04 </Td> <Td> 22 </Td> <Td> 05: 30 </Td> </Tr> <Tr> <Th> 2012 </Th> <Td> 20 </Td> <Td> 05: 14 </Td> <Td> 20 </Td> <Td> 23: 09 </Td> <Td> 22 </Td> <Td> 14: 49 </Td> <Td> 21 </Td> <Td> 11: 12 </Td> </Tr> <Tr> <Th> 2013 </Th> <Td> 20 </Td> <Td> 11: 02 </Td> <Td> 21 </Td> <Td> 05: 04 </Td> <Td> 22 </Td> <Td> 20: 44 </Td> <Td> 21 </Td> <Td> 17: 11 </Td> </Tr> <Tr> <Th> 2014 </Th> <Td> 20 </Td> <Td> 16: 57 </Td> <Td> 21 </Td> <Td> 10: 51 </Td> <Td> 23 </Td> <Td> 02: 29 </Td> <Td> 21 </Td> <Td> 23: 03 </Td> </Tr> <Tr> <Th> 2015 </Th> <Td> 20 </Td> <Td> 22: 45 </Td> <Td> 21 </Td> <Td> 16: 38 </Td> <Td> 23 </Td> <Td> 08: 21 </Td> <Td> 22 </Td> <Td> 04: 48 </Td> </Tr> <Tr> <Th> 2016 </Th> <Td> 20 </Td> <Td> 04: 30 </Td> <Td> 20 </Td> <Td> 22: 34 </Td> <Td> 22 </Td> <Td> 14: 21 </Td> <Td> 21 </Td> <Td> 10: 44 </Td> </Tr> <Tr> <Th> 2017 </Th> <Td> 20 </Td> <Td> 10: 28 </Td> <Td> 21 </Td> <Td> 04: 24 </Td> <Td> 22 </Td> <Td> 20: 02 </Td> <Td> 21 </Td> <Td> 16: 28 </Td> </Tr> <Tr> <Th> 2018 </Th> <Td> 20 </Td> <Td> 16: 15 </Td> <Td> 21 </Td> <Td> 10: 07 </Td> <Td> 23 </Td> <Td> 01: 54 </Td> <Td> 21 </Td> <Td> 22: 23 </Td> </Tr> <Tr> <Th> 2019 </Th> <Td> 20 </Td> <Td> 21: 58 </Td> <Td> 21 </Td> <Td> 15: 54 </Td> <Td> 23 </Td> <Td> 07: 50 </Td> <Td> 22 </Td> <Td> 04: 19 </Td> </Tr> <Tr> <Th> 2020 </Th> <Td> 20 </Td> <Td> 03: 50 </Td> <Td> 20 </Td> <Td> 21: 44 </Td> <Td> 22 </Td> <Td> 13: 31 </Td> <Td> 21 </Td> <Td> 10: 02 </Td> </Tr> </Table> <Tr> <Th> event </Th> <Th_colspan="2"> equinox </Th> <Th_colspan="2"> solstice </Th> <Th_colspan="2"> equinox </Th> <Th_colspan="2"> solstice </Th> </Tr>

How many days after the spring equinox will the fall equinox occur
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