Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 5 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/26/2021   22:21:08   (   0.01,-137.20) (   0.62,-134.53)  304.58                80
 05/28/2021   10:45:36   (  -0.01,-137.19) (   0.59,-139.79)  296.97                80
 05/29/2021   10:24:12   (  -0.01,-137.18) (  -0.45,-135.27)  218.27                80
 05/30/2021   22:46:10   (   0.01,-137.17) (  -0.74,-140.57)  387.98                80
 05/31/2021   22:30:05   (   0.01,-137.16) (   0.24,-136.04)  127.34                80
 06/02/2021   10:51:55   (  -0.00,-137.15) (   0.91,-141.32)  474.51                80
 06/03/2021   10:30:30   (  -0.00,-137.14) (  -0.07,-136.78)   40.62                80
 06/05/2021   22:33:44   (   0.00,-137.11) (  -0.08,-137.56)   51.27                80
 06/06/2021   22:17:39   (   0.01,-137.10) (   0.91,-133.03)  463.56                80
 06/08/2021   10:39:29   (  -0.01,-137.08) (   0.25,-138.31)  139.42                80