Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 9 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/05/2021   20:27:42   (  -0.40,-104.30) (  -0.75,-105.85)  176.53                80
 09/06/2021   20:11:37   (  -0.39,-104.31) (   0.25,-101.31)  340.50                80
 09/08/2021   08:33:26   (   0.39,-104.18) (   0.93,-106.58)  274.18                80
 09/09/2021   08:12:01   (   0.39,-104.16) (  -0.07,-102.05)  240.69                80
 09/10/2021   20:33:59   (  -0.39,-104.27) (  -1.11,-107.36)  352.03                80
 09/11/2021   20:17:55   (  -0.39,-104.28) (  -0.05,-102.83)  164.96                80
 09/13/2021   08:39:42   (   0.38,-104.18) (   1.28,-108.09)  446.51                80
 09/14/2021   08:18:19   (   0.38,-104.16) (   0.22,-103.57)   67.96                80
 09/16/2021   20:21:32   (  -0.37,-104.24) (  -0.39,-104.35)   12.49                80