Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 3 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/14/2020   22:33:43   (  -0.01,-137.21) (  -0.06,-137.58)   41.91                80
 03/15/2020   22:17:38   (  -0.01,-137.21) (   0.95,-133.05)  474.67                80
 03/17/2020   10:39:25   (   0.01,-137.22) (   0.27,-138.31)  125.54                80
 03/18/2020   10:18:01   (   0.02,-137.21) (  -0.74,-133.78)  390.39                80
 03/19/2020   22:39:57   (  -0.02,-137.20) (  -0.47,-139.08)  215.59                80
 03/20/2020   22:23:54   (  -0.02,-137.19) (   0.60,-134.57)  300.38                80
 03/22/2020   10:45:41   (   0.02,-137.20) (   0.62,-139.83)  300.18                80
 03/23/2020   10:24:17   (   0.02,-137.19) (  -0.39,-135.30)  215.32                80
 03/24/2020   22:46:13   (  -0.02,-137.17) (  -0.81,-140.60)  391.67                80
 03/25/2020   22:30:08   (  -0.02,-137.16) (   0.20,-136.07)  123.81                80