Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 3 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/17/2020   10:39:26   (   0.02,-137.21) (   0.26,-138.32)  126.44                80
 03/18/2020   10:18:01   (   0.02,-137.20) (  -0.75,-133.79)  389.27                80
 03/19/2020   22:39:57   (  -0.02,-137.19) (  -0.46,-139.09)  216.32                80
 03/20/2020   22:23:53   (  -0.01,-137.19) (   0.56,-134.56)  299.33                80
 03/22/2020   10:45:41   (   0.01,-137.18) (   0.60,-139.83)  302.38                80
 03/23/2020   10:24:17   (   0.01,-137.17) (  -0.41,-135.30)  212.89                80
 03/24/2020   22:46:13   (  -0.00,-137.15) (  -0.79,-140.60)  393.61                80
 03/25/2020   22:30:09   (  -0.00,-137.14) (   0.22,-136.07)  121.62                80
 03/27/2020   10:51:57   (   0.00,-137.13) (   0.93,-141.35)  480.60                80
 03/28/2020   10:30:32   (  -0.00,-137.11) (  -0.08,-136.82)   33.93                80