Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 8 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/10/2020   22:40:15   (  -0.03,-137.17) (  -0.43,-139.06)  214.92                80
 08/11/2020   22:24:11   (  -0.03,-137.16) (   0.57,-134.52)  300.98                80
 08/13/2020   10:45:59   (   0.02,-137.15) (   0.61,-139.79)  301.46                80
 08/14/2020   10:24:34   (   0.01,-137.14) (  -0.39,-135.26)  213.69                80
 08/15/2020   22:46:33   (   0.02,-137.13) (  -0.74,-140.58)  392.81                80
 08/16/2020   22:30:28   (   0.01,-137.12) (   0.26,-136.05)  122.20                80
 08/18/2020   10:52:17   (  -0.01,-137.09) (   0.91,-141.32)  481.47                80
 08/19/2020   10:33:32   (  -0.00,-137.07) (  -0.08,-136.78)   33.12                80
 08/21/2020   22:34:05   (   0.00,-137.03) (  -0.10,-137.56)   59.52                80
 08/22/2020   22:18:00   (   0.00,-137.01) (   0.90,-133.02)  454.66                80