Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 8 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/15/2020   22:46:32   (  -0.03,-137.20) (  -0.77,-140.57)  384.48                80
 08/16/2020   22:30:28   (  -0.02,-137.20) (   0.22,-136.04)  131.79                80
 08/18/2020   10:49:37   (  -0.01,-137.19) (   0.89,-141.32)  470.34                80
 08/19/2020   10:33:32   (  -0.01,-137.19) (  -0.10,-136.79)   45.68                80
 08/21/2020   22:34:05   (   0.00,-137.18) (  -0.08,-137.56)   43.48                80
 08/22/2020   22:18:01   (  -0.00,-137.17) (   0.92,-133.03)  472.15                80
 08/24/2020   10:37:09   (  -0.00,-137.15) (   0.26,-138.30)  130.34                80
 08/25/2020   10:21:05   (  -0.00,-137.14) (  -0.74,-133.76)  384.71                80
 08/26/2020   22:40:22   (   0.00,-137.12) (  -0.44,-139.07)  221.85                80
 08/27/2020   22:24:17   (   0.00,-137.11) (   0.56,-134.54)  292.87                80