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

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/02/2020   10:45:38   (   0.03,-137.22) (   0.59,-139.79)  292.16                80
 01/03/2020   10:24:13   (   0.02,-137.22) (  -0.42,-135.25)  224.66                80
 01/04/2020   22:48:48   (  -0.03,-137.22) (  -0.77,-140.55)  379.62                80
 01/05/2020   22:27:23   (  -0.03,-137.22) (   0.24,-136.02)  136.83                80
 01/07/2020   10:51:49   (   0.04,-137.22) (   0.95,-141.28)  463.45                80
 01/08/2020   10:30:23   (   0.03,-137.21) (  -0.06,-136.75)   52.39                80
 01/10/2020   22:36:13   (  -0.04,-137.18) (  -0.11,-137.51)   38.28                80
 01/11/2020   22:14:48   (  -0.04,-137.16) (   0.90,-132.98)  476.82                80
 01/13/2020   10:39:14   (   0.04,-137.14) (   0.29,-138.24)  125.30                80
 01/14/2020   10:17:49   (   0.04,-137.13) (  -0.72,-133.71)  389.42                80