Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 2 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/11/2020   22:33:32   (  -0.04,-137.22) (  -0.13,-137.52)   34.82                80
 02/12/2020   22:17:28   (  -0.04,-137.22) (   0.93,-133.00)  481.27                80
 02/14/2020   10:39:17   (   0.04,-137.21) (   0.26,-138.27)  120.20                80
 02/15/2020   10:17:52   (   0.04,-137.21) (  -0.74,-133.74)  395.39                80
 02/16/2020   22:39:49   (  -0.05,-137.20) (  -0.47,-139.04)  210.52                80
 02/17/2020   22:23:44   (  -0.05,-137.19) (   0.53,-134.51)  304.81                80
 02/19/2020   10:45:32   (   0.06,-137.17) (   0.65,-139.78)  297.57                80
 02/20/2020   10:24:08   (   0.06,-137.16) (  -0.35,-135.25)  217.36                80
 02/21/2020   22:46:05   (  -0.06,-137.14) (  -0.80,-140.56)  389.64                80
 02/22/2020   22:30:01   (  -0.06,-137.12) (   0.20,-136.03)  125.21                80
 02/24/2020   10:51:49   (   0.07,-137.11) (   0.99,-141.30)  477.66                80