Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 1 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/31/2020   22:39:43   (  -0.04,-137.21) (  -0.44,-139.01)  205.92                80
 02/01/2020   22:23:38   (  -0.04,-137.20) (   0.55,-134.48)  309.80                80
 02/03/2020   10:45:26   (   0.05,-137.19) (   0.64,-139.75)  292.00                80
 02/04/2020   10:24:03   (   0.05,-137.18) (  -0.42,-135.23)  223.13                80
 02/05/2020   22:45:59   (  -0.06,-137.16) (  -0.80,-140.53)  383.82                80
 02/06/2020   22:29:55   (  -0.06,-137.15) (   0.20,-136.00)  130.81                80
 02/08/2020   10:51:43   (   0.07,-137.12) (   0.99,-141.27)  472.45                80
 02/09/2020   10:30:19   (   0.06,-137.10) (  -0.01,-136.74)   41.67                80
 02/11/2020   22:33:32   (  -0.07,-137.05) (  -0.14,-137.52)   52.82                80
 02/12/2020   22:14:47   (  -0.07,-137.03) (   0.86,-132.99)  461.08                80
 02/14/2020   10:39:15   (   0.07,-137.00) (   0.33,-138.26)  143.27                80