Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 10 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/24/2021   10:50:45   (   0.03,-137.22) (   0.98,-141.49)  486.30                80
 10/25/2021   10:34:41   (   0.03,-137.22) (  -0.02,-136.96)   29.90                80
 10/27/2021   22:35:17   (  -0.02,-137.22) (  -0.12,-137.75)   59.93                80
 10/28/2021   22:19:14   (  -0.02,-137.22) (   0.88,-133.22)  455.75                80
 10/30/2021   10:38:24   (   0.02,-137.21) (   0.29,-138.50)  145.93                80
 10/31/2021   10:22:20   (   0.02,-137.21) (  -0.70,-133.97)  369.40                80
 11/01/2021   22:41:39   (  -0.01,-137.19) (  -0.48,-139.28)  237.30                80
 11/02/2021   22:25:35   (  -0.01,-137.19) (   0.52,-134.75)  277.80                80
 11/04/2021   10:44:46   (   0.01,-137.17) (   0.65,-140.02)  324.78                80
 11/05/2021   10:28:42   (   0.01,-137.16) (  -0.35,-135.49)  189.70                80