Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 9 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/28/2020   22:24:25   (  -0.04,-137.19) (   0.57,-134.54)  303.28                80
 09/30/2020   10:43:32   (   0.03,-137.19) (   0.61,-139.81)  297.68                80
 10/01/2020   10:27:27   (   0.03,-137.19) (  -0.38,-135.27)  218.05                80
 10/02/2020   22:46:43   (  -0.03,-137.17) (  -0.77,-140.58)  388.68                80
 10/03/2020   22:30:37   (  -0.03,-137.16) (   0.21,-136.05)  126.77                80
 10/05/2020   10:49:45   (   0.03,-137.15) (   0.97,-141.32)  475.08                80
 10/06/2020   10:33:39   (   0.03,-137.14) (  -0.02,-136.78)   39.88                80
 10/08/2020   22:34:10   (  -0.03,-137.08) (  -0.13,-137.56)   54.15                80
 10/09/2020   22:18:05   (  -0.03,-137.06) (   0.86,-133.02)  459.95                80
 10/11/2020   10:37:12   (   0.02,-137.04) (   0.32,-138.30)  143.96                80
 10/12/2020   10:21:07   (   0.02,-137.01) (  -0.72,-133.77)  369.72                80