Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 8 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/25/2019   22:24:37   (   0.03,-137.21) (   0.58,-134.59)  297.78                80
 08/27/2019   10:46:25   (  -0.03,-137.20) (   0.56,-139.87)  303.77                80
 08/28/2019   10:25:01   (  -0.03,-137.19) (  -0.46,-135.34)  211.94                80
 08/29/2019   22:46:57   (   0.03,-137.18) (  -0.74,-140.64)  393.42                80
 08/30/2019   22:30:52   (   0.03,-137.17) (   0.28,-136.11)  122.12                80
 09/01/2019   10:52:40   (  -0.03,-137.16) (   0.92,-141.37)  480.13                80
 09/02/2019   10:31:15   (  -0.03,-137.15) (  -0.10,-136.84)   35.13                80
 09/04/2019   22:34:27   (   0.03,-137.11) (  -0.07,-137.61)   56.12                80
 09/05/2019   22:18:23   (   0.03,-137.10) (   0.95,-133.08)  458.61                80
 09/07/2019   10:40:10   (  -0.04,-137.07) (   0.26,-138.34)  145.00                80
 09/08/2019   10:18:45   (  -0.04,-137.05) (  -0.76,-133.81)  369.34                80