Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 7 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/04/2020   22:36:19   (  -0.01,-137.18) (  -0.10,-137.50)   36.71                80
 07/05/2020   22:17:36   (  -0.01,-137.17) (   0.94,-132.98)  478.45                80
 07/07/2020   10:39:24   (   0.01,-137.16) (   0.26,-138.24)  123.69                80
 07/08/2020   10:18:01   (   0.01,-137.15) (  -0.78,-133.72)  391.37                80
 07/09/2020   22:39:57   (  -0.02,-137.13) (  -0.46,-139.01)  215.31                80
 07/10/2020   22:23:54   (  -0.02,-137.12) (   0.58,-134.49)  299.69                80
 07/12/2020   10:45:42   (   0.02,-137.10) (   0.62,-139.76)  302.85                80
 07/13/2020   10:24:17   (   0.02,-137.08) (  -0.37,-135.22)  211.64                80
 07/14/2020   22:46:15   (  -0.01,-137.05) (  -0.81,-140.53)  396.52                80
 07/15/2020   22:30:11   (   0.00,-137.04) (   0.23,-136.01)  117.38                80
 07/17/2020   10:52:00   (  -0.01,-137.01) (   0.97,-141.27)  486.69                80
 07/18/2020   10:30:36   (  -0.01,-136.98) (  -0.08,-136.75)   26.91                80