Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 8 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/21/2020   22:34:05   (  -0.03,-137.18) (  -0.10,-137.55)   41.83                80
 08/22/2020   22:18:00   (  -0.03,-137.18) (   0.90,-133.02)  473.91                80
 08/24/2020   10:37:09   (   0.03,-137.16) (   0.28,-138.29)  128.25                80
 08/25/2020   10:21:04   (   0.03,-137.15) (  -0.72,-133.76)  386.94                80
 08/26/2020   22:40:22   (  -0.02,-137.14) (  -0.45,-139.06)  219.57                80
 08/27/2020   22:24:17   (  -0.02,-137.12) (   0.54,-134.53)  295.08                80
 08/29/2020   10:43:26   (  -0.01,-137.10) (   0.57,-139.81)  308.87                80
 08/30/2020   10:27:22   (  -0.01,-137.08) (  -0.43,-135.28)  205.70                80
 08/31/2020   22:46:38   (   0.01,-137.06) (  -0.80,-140.58)  401.42                80
 09/01/2020   22:30:34   (   0.00,-137.04) (   0.20,-136.04)  113.16                80