Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 5 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/26/2020   10:24:15   (  -0.01,-137.21) (  -0.43,-135.26)  221.13                80
 05/27/2020   22:48:51   (   0.01,-137.21) (  -0.74,-140.57)  382.87                80
 05/28/2020   22:27:27   (   0.01,-137.21) (   0.30,-136.04)  133.84                80
 05/30/2020   10:51:54   (  -0.00,-137.21) (   0.89,-141.31)  466.18                80
 05/31/2020   10:30:29   (  -0.00,-137.21) (  -0.08,-136.77)   50.24                80
 06/02/2020   22:33:39   (   0.00,-137.20) (  -0.10,-137.53)   38.81                80
 06/03/2020   22:17:35   (   0.00,-137.19) (   0.94,-133.00)  477.19                80
 06/05/2020   10:36:42   (   0.00,-137.18) (   0.25,-138.27)  124.11                80
 06/06/2020   10:20:38   (   0.01,-137.17) (  -0.79,-133.74)  391.42                80
 06/07/2020   22:39:53   (  -0.01,-137.15) (  -0.42,-139.04)  214.88                80