Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 8 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/19/2020   10:30:52   (   0.03,-137.19) (  -0.08,-136.78)   47.33                80
 08/21/2020   22:34:05   (  -0.03,-137.19) (  -0.11,-137.55)   41.65                80
 08/22/2020   22:18:00   (  -0.03,-137.18) (   0.89,-133.02)  474.12                80
 08/24/2020   10:37:09   (   0.03,-137.17) (   0.28,-138.29)  128.05                80
 08/25/2020   10:21:04   (   0.03,-137.16) (  -0.71,-133.76)  387.21                80
 08/26/2020   22:40:21   (  -0.02,-137.14) (  -0.46,-139.06)  219.17                80
 08/27/2020   22:24:18   (  -0.01,-137.13) (   0.60,-134.54)  295.45                80
 08/29/2020   10:43:26   (  -0.01,-137.10) (   0.58,-139.81)  308.33                80
 08/30/2020   10:27:22   (  -0.01,-137.09) (  -0.42,-135.28)  206.32                80
 08/31/2020   22:46:38   (   0.00,-137.07) (  -0.81,-140.57)  400.59                80