Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 5 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/07/2020   09:40:03   (  -0.13,-128.29) (  -0.99,-124.32)  452.68                80
 05/08/2020   22:04:40   (   0.10,-128.30) (  -0.19,-129.62)  150.69                80
 05/09/2020   21:43:15   (   0.11,-128.30) (   0.84,-125.09)  366.19                80
 05/11/2020   10:07:42   (  -0.09,-128.32) (   0.35,-130.36)  231.77                80
 05/12/2020   09:46:18   (  -0.10,-128.32) (  -0.68,-125.83)  284.47                80
 05/13/2020   22:10:53   (   0.07,-128.31) (  -0.56,-131.12)  320.16                80
 05/14/2020   21:49:29   (   0.08,-128.31) (   0.47,-126.59)  196.49                80
 05/16/2020   10:13:56   (  -0.06,-128.33) (   0.72,-131.85)  401.10                80
 05/17/2020   09:52:32   (  -0.07,-128.33) (  -0.31,-127.32)  114.95                80
 05/18/2020   22:17:07   (   0.04,-128.31) (  -0.92,-132.62)  490.73                80
 05/19/2020   21:55:42   (   0.06,-128.31) (   0.11,-128.09)   25.50                80