Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 5 1.  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   21:55:45   (   0.12,-128.25) (   0.14,-128.11)   15.51                80
 05/06/2020   10:01:28   (  -0.11,-128.29) (   0.02,-128.85)   63.95                80
 05/07/2020   09:40:04   (  -0.13,-128.29) (  -1.01,-124.32)  452.71                80
 05/08/2020   22:04:40   (   0.10,-128.29) (  -0.17,-129.62)  151.60                80
 05/09/2020   21:43:15   (   0.12,-128.29) (   0.86,-125.10)  365.21                80
 05/11/2020   10:07:42   (  -0.09,-128.32) (   0.39,-130.35)  232.14                80
 05/12/2020   09:46:17   (  -0.10,-128.32) (  -0.64,-125.82)  284.06                80
 05/13/2020   22:10:54   (   0.07,-128.30) (  -0.53,-131.12)  321.39                80
 05/14/2020   21:49:28   (   0.09,-128.30) (   0.44,-126.58)  195.18                80