Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 2 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/09/2020   10:30:20   (   0.04,-137.22) (  -0.06,-136.75)   54.15                80
 02/11/2020   22:33:32   (  -0.04,-137.22) (  -0.10,-137.53)   34.98                80
 02/12/2020   22:17:28   (  -0.04,-137.22) (   0.90,-133.00)  480.99                80
 02/14/2020   10:39:16   (   0.04,-137.22) (   0.29,-138.27)  120.12                80
 02/15/2020   10:17:52   (   0.04,-137.21) (  -0.71,-133.73)  395.41                80
 02/16/2020   22:39:49   (  -0.05,-137.19) (  -0.44,-139.05)  211.00                80
 02/17/2020   22:23:45   (  -0.05,-137.18) (   0.56,-134.52)  304.29                80
 02/19/2020   10:45:33   (   0.06,-137.17) (   0.63,-139.79)  297.77                80
 02/20/2020   10:24:08   (   0.06,-137.16) (  -0.37,-135.25)  217.10                80
 02/21/2020   22:46:05   (  -0.06,-137.13) (  -0.84,-140.56)  390.37                80
 02/22/2020   22:30:00   (  -0.06,-137.12) (   0.17,-136.02)  124.41                80