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

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/17/2020   22:36:23   (   0.00,-137.18) (  -0.09,-137.56)   43.99                80
 05/18/2020   22:17:39   (   0.01,-137.17) (   0.95,-133.03)  471.62                80
 05/20/2020   10:39:26   (  -0.01,-137.15) (   0.24,-138.30)  130.81                80
 05/21/2020   10:18:01   (  -0.01,-137.13) (  -0.79,-133.77)  384.28                80
 05/22/2020   22:39:57   (   0.01,-137.12) (  -0.44,-139.06)  221.95                80
 05/23/2020   22:23:52   (   0.01,-137.10) (   0.59,-134.53)  292.71                80
 05/25/2020   10:45:40   (  -0.01,-137.06) (   0.60,-139.80)  311.27                80
 05/26/2020   10:24:14   (  -0.01,-137.04) (  -0.38,-135.26)  202.81                80
 05/27/2020   22:46:10   (   0.00,-137.00) (  -0.79,-140.56)  405.13                80
 05/28/2020   22:30:05   (   0.00,-136.98) (   0.19,-136.02)  108.68                80
 05/30/2020   10:51:52   (   0.00,-136.93) (   1.00,-141.28)  496.41                80
 05/31/2020   10:30:28   (   0.00,-136.91) (  -0.03,-136.76)   16.99                80