Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2022 1 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)
 01/23/2022   21:46:34   (   0.04,-128.36) (   0.77,-125.07)  375.38                80
 01/25/2022   10:08:19   (  -0.04,-128.35) (   0.41,-130.33)  226.03                80
 01/26/2022   09:46:53   (  -0.04,-128.34) (  -0.59,-125.79)  290.44                80
 01/27/2022   22:08:47   (   0.03,-128.34) (  -0.59,-131.09)  313.40                80
 01/28/2022   21:52:40   (   0.03,-128.33) (   0.41,-126.55)  202.70                80
 01/30/2022   10:14:26   (  -0.02,-128.30) (   0.77,-131.81)  399.83                80
 01/31/2022   09:52:59   (  -0.02,-128.29) (  -0.23,-127.27)  115.85                80
 02/01/2022   22:14:54   (   0.02,-128.27) (  -0.93,-132.57)  489.17                80
 02/02/2022   21:58:47   (   0.03,-128.26) (   0.07,-128.03)   26.42                80
 02/05/2022   10:01:46   (  -0.02,-128.22) (   0.11,-128.75)   60.37                80