Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 1 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/03/2020   10:24:13   (   0.02,-137.22) (  -0.45,-135.26)  224.74                80
 01/04/2020   22:48:48   (  -0.03,-137.22) (  -0.80,-140.55)  379.67                80
 01/05/2020   22:27:22   (  -0.03,-137.22) (   0.21,-136.01)  136.83                80
 01/07/2020   10:51:49   (   0.04,-137.22) (   0.92,-141.29)  463.40                80
 01/08/2020   10:30:24   (   0.03,-137.21) (  -0.09,-136.75)   52.46                80
 01/10/2020   22:36:13   (  -0.04,-137.18) (  -0.14,-137.51)   38.42                80
 01/11/2020   22:14:47   (  -0.04,-137.16) (   0.87,-132.97)  476.76                80
 01/13/2020   10:39:15   (   0.04,-137.14) (   0.26,-138.25)  125.29                80
 01/14/2020   10:17:49   (   0.04,-137.13) (  -0.75,-133.71)  389.46                80
 01/15/2020   22:42:23   (  -0.05,-137.09) (  -0.48,-139.00)  217.87                80