Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 5 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/03/2020   21:58:25   (   0.12,-128.25) (   0.13,-128.11)   16.04                80
 05/06/2020   10:01:28   (  -0.11,-128.29) (   0.04,-128.84)   63.81                80
 05/07/2020   09:40:03   (  -0.13,-128.30) (  -0.99,-124.32)  452.97                80
 05/08/2020   22:04:40   (   0.10,-128.29) (  -0.19,-129.62)  150.91                80
 05/09/2020   21:43:15   (   0.12,-128.30) (   0.84,-125.09)  365.94                80
 05/11/2020   10:07:42   (  -0.09,-128.32) (   0.36,-130.35)  231.54                80
 05/12/2020   09:46:18   (  -0.10,-128.32) (  -0.67,-125.83)  284.70                80
 05/13/2020   22:10:53   (   0.07,-128.31) (  -0.57,-131.12)  320.38                80
 05/14/2020   21:49:29   (   0.09,-128.31) (   0.46,-126.59)  196.25                80
 05/16/2020   10:13:56   (  -0.06,-128.33) (   0.73,-131.85)  400.95                80
 05/17/2020   09:52:32   (  -0.07,-128.33) (  -0.30,-127.32)  115.11                80