Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2022 1 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/17/2022   21:59:12   (   0.04,-128.36) (   0.09,-128.12)   27.14                80
 01/20/2022   10:02:12   (  -0.04,-128.36) (   0.04,-128.85)   55.74                80
 01/21/2022   09:43:26   (  -0.04,-128.36) (  -0.95,-124.31)  461.21                80
 01/22/2022   22:02:40   (   0.04,-128.35) (  -0.23,-129.61)  142.74                80
 01/23/2022   21:46:34   (   0.04,-128.35) (   0.77,-125.07)  374.04                80
 01/25/2022   10:08:19   (  -0.04,-128.34) (   0.41,-130.33)  226.54                80
 01/26/2022   09:46:53   (  -0.04,-128.34) (  -0.58,-125.79)  289.72                80
 01/27/2022   22:08:47   (   0.04,-128.32) (  -0.59,-131.09)  315.66                80
 01/28/2022   21:52:40   (   0.03,-128.31) (   0.41,-126.55)  200.23                80
 01/30/2022   10:14:26   (  -0.02,-128.29) (   0.77,-131.81)  401.48                80