Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 5 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/11/2020   22:46:14   (   0.01,-137.20) (  -0.73,-140.60)  386.89                80
 05/12/2020   22:30:09   (   0.01,-137.20) (   0.24,-136.05)  129.73                80
 05/14/2020   10:51:57   (  -0.01,-137.20) (   0.89,-141.33)  470.82                80
 05/15/2020   10:30:32   (  -0.01,-137.19) (  -0.08,-136.79)   45.51                80
 05/17/2020   22:33:44   (   0.01,-137.19) (  -0.06,-137.57)   42.78                80
 05/18/2020   22:17:38   (   0.01,-137.18) (   0.91,-133.03)  473.34                80
 05/20/2020   10:39:26   (  -0.01,-137.17) (   0.22,-138.30)  128.14                80
 05/21/2020   10:18:01   (  -0.01,-137.16) (  -0.76,-133.76)  387.42                80
 05/22/2020   22:39:57   (   0.01,-137.15) (  -0.41,-139.07)  218.53                80
 05/23/2020   22:23:52   (   0.00,-137.13) (   0.57,-134.53)  296.63                80
 05/25/2020   10:45:39   (  -0.00,-137.11) (   0.63,-139.79)  306.27                80