Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 1 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/04/2020   22:48:48   (  -0.02,-137.22) (  -0.77,-140.55)  379.51                80
 01/05/2020   22:27:23   (  -0.02,-137.22) (   0.24,-136.02)  137.11                80
 01/07/2020   10:51:49   (   0.03,-137.22) (   0.95,-141.28)  463.02                80
 01/08/2020   10:30:23   (   0.03,-137.21) (  -0.06,-136.74)   52.96                80
 01/10/2020   22:36:13   (  -0.03,-137.18) (  -0.11,-137.51)   37.45                80
 01/11/2020   22:14:48   (  -0.03,-137.17) (   0.90,-132.98)  477.81                80
 01/13/2020   10:39:14   (   0.04,-137.15) (   0.30,-138.24)  124.14                80
 01/14/2020   10:17:49   (   0.03,-137.14) (  -0.71,-133.71)  390.72                80
 01/15/2020   22:42:24   (  -0.04,-137.11) (  -0.46,-139.01)  216.40                80
 01/16/2020   22:20:58   (  -0.03,-137.09) (   0.55,-134.47)  298.30                80
 01/18/2020   10:45:25   (   0.04,-137.07) (   0.65,-139.74)  304.32                80