Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 11 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/01/2019   22:46:46   (  -0.00,-137.21) (  -0.76,-140.63)  389.70                80
 11/02/2019   22:30:40   (  -0.00,-137.20) (   0.23,-136.09)  126.46                80
 11/04/2019   10:49:48   (   0.00,-137.20) (   0.94,-141.36)  474.05                80
 11/05/2019   10:33:43   (   0.00,-137.20) (  -0.10,-136.84)   41.96                80
 11/07/2019   22:34:13   (  -0.00,-137.18) (  -0.12,-137.60)   48.77                80
 11/08/2019   22:18:08   (  -0.01,-137.17) (   0.93,-133.08)  466.86                80
 11/10/2019   10:37:15   (   0.01,-137.16) (   0.29,-138.34)  134.55                80
 11/11/2019   10:21:10   (   0.01,-137.15) (  -0.76,-133.81)  380.74                80
 11/12/2019   22:40:26   (  -0.01,-137.12) (  -0.45,-139.11)  226.74                80
 11/13/2019   22:24:20   (  -0.02,-137.10) (   0.54,-134.58)  288.01                80
 11/15/2019   10:43:27   (   0.02,-137.08) (   0.62,-139.85)  314.93                80