Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 3 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/22/2020   10:45:41   (   0.00,-137.21) (   0.60,-139.83)  298.43                80
 03/23/2020   10:24:17   (  -0.00,-137.22) (  -0.42,-135.30)  218.17                80
 03/24/2020   22:46:14   (   0.00,-137.22) (  -0.73,-140.61)  386.33                80
 03/25/2020   22:30:10   (   0.01,-137.22) (   0.28,-136.08)  130.13                80
 03/27/2020   10:51:57   (  -0.01,-137.22) (   0.93,-141.34)  470.27                80
 03/28/2020   10:30:32   (  -0.01,-137.22) (  -0.08,-136.81)   45.57                80
 03/30/2020   22:33:45   (   0.02,-137.20) (  -0.05,-137.60)   45.32                80
 03/31/2020   22:17:41   (   0.02,-137.19) (   0.96,-133.07)  469.98                80
 04/02/2020   10:39:28   (  -0.01,-137.17) (   0.25,-138.33)  132.10                80
 04/03/2020   10:18:04   (  -0.01,-137.15) (  -0.77,-133.80)  382.64                80