Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 1 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/20/2021   20:04:24   (   0.07,-104.09) (   1.02, -99.76)  493.38                80
 01/22/2021   08:23:33   (  -0.07,-104.37) (   0.07,-105.05)   76.71                80
 01/23/2021   08:07:28   (  -0.06,-104.37) (  -0.95,-100.52)  439.86                80
 01/24/2021   20:29:24   (   0.06,-104.10) (  -0.30,-105.81)  194.70                80
 01/25/2021   20:07:58   (   0.06,-104.09) (   0.66,-101.27)  321.52                80
 01/27/2021   08:29:47   (  -0.05,-104.37) (   0.43,-106.56)  249.38                80
 01/28/2021   08:13:43   (  -0.05,-104.37) (  -0.59,-102.03)  267.03                80
 01/29/2021   20:35:38   (   0.04,-104.09) (  -0.66,-107.32)  367.05                80
 01/30/2021   20:14:13   (   0.04,-104.09) (   0.31,-102.78)  148.94                80
 02/01/2021   08:36:02   (  -0.04,-104.36) (   0.79,-108.07)  422.71                80
 02/02/2021   08:19:58   (  -0.04,-104.36) (  -0.24,-103.54)   93.81                80