Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 9 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/08/2021   08:33:26   (   0.39,-104.18) (   0.90,-106.59)  273.61                80
 09/09/2021   08:12:02   (   0.39,-104.17) (  -0.09,-102.05)  241.46                80
 09/10/2021   20:33:59   (  -0.39,-104.28) (  -1.08,-107.36)  351.10                80
 09/11/2021   20:17:54   (  -0.39,-104.29) (  -0.08,-102.83)  166.06                80
 09/13/2021   08:39:43   (   0.38,-104.19) (   1.26,-108.10)  444.99                80
 09/14/2021   08:18:18   (   0.38,-104.18) (   0.26,-103.56)   69.59                80
 09/16/2021   20:21:32   (  -0.37,-104.25) (  -0.37,-104.35)   10.71                80
 09/19/2021   08:27:16   (   0.36,-104.18) (   0.55,-105.09)  102.43                80
 09/20/2021   08:05:51   (   0.36,-104.17) (  -0.45,-100.55)  412.79                80
 09/21/2021   20:27:49   (  -0.35,-104.24) (  -0.71,-105.86)  185.14                80