Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 4 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/09/2020   22:46:16   (   0.02,-137.21) (  -0.72,-140.62)  388.14                80
 04/10/2020   22:30:12   (   0.02,-137.21) (   0.30,-136.09)  128.35                80
 04/12/2020   10:51:59   (  -0.02,-137.21) (   0.90,-141.35)  471.93                80
 04/13/2020   10:30:34   (  -0.02,-137.21) (  -0.12,-136.82)   44.01                80
 04/15/2020   22:33:46   (   0.01,-137.19) (  -0.06,-137.60)   45.88                80
 04/16/2020   22:17:42   (   0.01,-137.18) (   0.96,-133.07)  469.99                80
 04/18/2020   10:39:29   (  -0.01,-137.18) (   0.25,-138.33)  130.94                80
 04/19/2020   10:18:05   (  -0.01,-137.17) (  -0.77,-133.80)  384.52                80
 04/20/2020   22:40:01   (   0.00,-137.15) (  -0.42,-139.10)  222.13                80
 04/21/2020   22:23:56   (   0.00,-137.14) (   0.60,-134.57)  293.21                80