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

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/09/2021   08:12:01   (   0.39,-104.17) (  -0.06,-102.04)  241.58                80
 09/10/2021   20:33:59   (  -0.39,-104.28) (  -1.06,-107.36)  350.97                80
 09/11/2021   20:17:55   (  -0.39,-104.29) (  -0.06,-102.83)  166.23                80
 09/13/2021   08:39:43   (   0.38,-104.19) (   1.23,-108.10)  444.65                80
 09/14/2021   08:18:19   (   0.38,-104.18) (   0.24,-103.57)   69.99                80
 09/16/2021   20:21:31   (  -0.37,-104.26) (  -0.41,-104.34)   10.15                80
 09/19/2021   08:27:15   (   0.36,-104.19) (   0.58,-105.08)  101.72                80
 09/20/2021   08:05:51   (   0.36,-104.18) (  -0.42,-100.54)  413.58                80
 09/21/2021   20:27:48   (  -0.35,-104.24) (  -0.74,-105.85)  184.35                80
 09/22/2021   20:11:45   (  -0.36,-104.25) (   0.32,-101.33)  333.54                80