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) (   0.59,-134.48)  312.32                80
 01/18/2020   10:45:25   (   0.04,-137.21) (   0.60,-139.74)  288.27                80
 01/19/2020   10:24:00   (   0.04,-137.21) (  -0.41,-135.21)  228.07                80
 01/20/2020   22:48:34   (  -0.05,-137.20) (  -0.81,-140.50)  376.13                80
 01/21/2020   22:27:09   (  -0.05,-137.20) (   0.20,-135.97)  139.96                80
 01/23/2020   10:51:35   (   0.06,-137.18) (   0.99,-141.23)  461.61                80
 01/24/2020   10:30:10   (   0.06,-137.17) (  -0.02,-136.69)   54.14                80
 01/26/2020   22:35:59   (  -0.06,-137.15) (  -0.12,-137.46)   35.51                80
 01/27/2020   22:14:34   (  -0.06,-137.14) (   0.89,-132.93)  479.96                80
 01/29/2020   10:39:00   (   0.07,-137.12) (   0.30,-138.19)  122.28                80
 01/30/2020   10:17:35   (   0.06,-137.10) (  -0.71,-133.66)  392.82                80