Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 1 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/27/2020   22:14:41   (  -0.04,-137.21) (   0.89,-132.96)  484.35                80
 01/29/2020   10:39:09   (   0.05,-137.21) (   0.30,-138.23)  116.72                80
 01/30/2020   10:17:46   (   0.04,-137.21) (  -0.75,-133.71)  399.22                80
 01/31/2020   22:42:22   (  -0.05,-137.20) (  -0.47,-139.01)  206.01                80
 02/01/2020   22:20:59   (  -0.05,-137.20) (   0.59,-134.49)  309.58                80
 02/03/2020   10:45:27   (   0.06,-137.19) (   0.61,-139.76)  292.61                80
 02/04/2020   10:24:03   (   0.06,-137.17) (  -0.39,-135.23)  222.38                80
 02/05/2020   22:48:39   (  -0.07,-137.15) (  -0.83,-140.53)  384.45                80
 02/06/2020   22:27:14   (  -0.07,-137.14) (   0.17,-135.99)  130.05                80
 02/08/2020   10:51:43   (   0.08,-137.11) (   1.02,-141.26)  473.68                80
 02/09/2020   10:30:18   (   0.07,-137.09) (   0.02,-136.73)   40.41                80