Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 7 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/28/2019   22:46:54   (   0.03,-137.20) (  -0.73,-140.66)  393.86                80
 07/29/2019   22:30:49   (   0.03,-137.19) (   0.29,-136.13)  121.95                80
 07/31/2019   10:49:56   (  -0.04,-137.18) (   0.92,-141.39)  479.56                80
 08/01/2019   10:33:52   (  -0.04,-137.17) (  -0.09,-136.86)   35.83                80
 08/03/2019   22:34:25   (   0.04,-137.14) (  -0.06,-137.64)   55.92                80
 08/04/2019   22:18:20   (   0.04,-137.13) (   0.96,-133.10)  459.23                80
 08/06/2019   10:37:28   (  -0.04,-137.11) (   0.26,-138.37)  143.15                80
 08/07/2019   10:21:23   (  -0.04,-137.10) (  -0.76,-133.83)  371.64                80
 08/08/2019   22:40:40   (   0.05,-137.07) (  -0.40,-139.15)  236.31                80
 08/09/2019   22:24:36   (   0.05,-137.05) (   0.62,-134.61)  278.13                80