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

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/05/2021   22:14:36   (   0.02,-137.20) (   0.95,-132.96)  482.12                80
 05/07/2021   10:39:05   (  -0.02,-137.19) (   0.20,-138.24)  119.58                80
 05/08/2021   10:17:41   (  -0.02,-137.18) (  -0.77,-133.70)  396.05                80
 05/09/2021   22:42:19   (   0.01,-137.18) (  -0.39,-139.02)  209.12                80
 05/10/2021   22:20:56   (   0.02,-137.18) (   0.65,-134.49)  306.26                80
 05/12/2021   10:45:24   (  -0.01,-137.16) (   0.56,-139.76)  296.44                80
 05/13/2021   10:24:01   (  -0.02,-137.15) (  -0.47,-135.24)  218.34                80
 05/14/2021   22:45:58   (   0.01,-137.13) (  -0.74,-140.54)  388.48                80
 05/15/2021   22:29:53   (   0.01,-137.11) (   0.24,-136.00)  125.97                80
 05/17/2021   10:51:43   (  -0.01,-137.08) (   0.91,-141.28)  478.08                80
 05/18/2021   10:30:18   (  -0.01,-137.06) (  -0.06,-136.74)   35.88                80