Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 3 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/28/2021   22:29:55   (   0.04,-137.21) (   0.28,-136.04)  133.39                80
 03/30/2021   10:51:43   (  -0.04,-137.21) (   0.89,-141.31)  466.98                80
 03/31/2021   10:30:18   (  -0.04,-137.21) (  -0.15,-136.78)   49.04                80
 04/02/2021   22:33:29   (   0.04,-137.19) (  -0.02,-137.55)   40.98                80
 04/03/2021   22:17:24   (   0.04,-137.18) (   0.97,-133.01)  474.57                80
 04/05/2021   10:39:11   (  -0.03,-137.16) (   0.20,-138.28)  127.26                80
 04/06/2021   10:17:45   (  -0.03,-137.15) (  -0.79,-133.74)  387.97                80
 04/07/2021   22:39:41   (   0.02,-137.12) (  -0.42,-139.04)  218.50                80
 04/08/2021   22:23:36   (   0.02,-137.11) (   0.62,-134.51)  296.72                80
 04/10/2021   10:45:23   (  -0.02,-137.09) (   0.60,-139.77)  305.36                80