Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 1 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)
 01/16/2020   22:20:59   (  -0.03,-137.22) (   0.57,-134.48)  312.26                80
 01/18/2020   10:45:25   (   0.04,-137.21) (   0.62,-139.74)  288.11                80
 01/19/2020   10:24:00   (   0.04,-137.21) (  -0.39,-135.20)  228.24                80
 01/20/2020   22:48:35   (  -0.05,-137.20) (  -0.78,-140.51)  376.11                80
 01/21/2020   22:27:09   (  -0.05,-137.20) (   0.24,-135.97)  139.96                80
 01/23/2020   10:51:36   (   0.06,-137.19) (   0.95,-141.24)  461.36                80
 01/24/2020   10:30:10   (   0.06,-137.18) (  -0.06,-136.70)   54.31                80
 01/26/2020   22:35:59   (  -0.06,-137.15) (  -0.14,-137.46)   35.42                80
 01/27/2020   22:14:34   (  -0.06,-137.14) (   0.87,-132.93)  480.08                80
 01/29/2020   10:39:00   (   0.07,-137.12) (   0.32,-138.19)  121.95                80