Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2021 10 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/24/2021   21:53:33   (  -0.22,-128.34) (   0.13,-126.69)  187.17                80
 10/26/2021   10:12:44   (   0.19,-128.36) (   0.99,-131.98)  412.05                80
 10/27/2021   09:56:40   (   0.20,-128.37) (  -0.01,-127.45)  105.27                80
 10/28/2021   22:15:59   (  -0.17,-128.38) (  -1.18,-132.76)  499.86                80
 10/29/2021   21:59:56   (  -0.18,-128.39) (  -0.13,-128.24)   17.49                80
 11/01/2021   10:00:23   (   0.17,-128.41) (   0.30,-128.99)   65.58                80
 11/02/2021   09:44:20   (   0.18,-128.42) (  -0.70,-124.46)  451.26                80
 11/03/2021   22:03:38   (  -0.15,-128.42) (  -0.48,-129.77)  154.78                80
 11/04/2021   21:47:34   (  -0.17,-128.42) (   0.52,-125.24)  361.81                80
 11/06/2021   10:06:46   (   0.14,-128.43) (   0.59,-130.53)  239.34                80