Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 6 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/08/2020   09:39:55   (  -0.02,-127.94) (  -0.86,-124.24)  422.11                80
 06/09/2020   22:01:50   (  -0.00,-127.88) (  -0.35,-129.53)  188.05                80
 06/10/2020   21:45:45   (   0.00,-127.85) (   0.63,-124.99)  325.44                80
 06/12/2020   10:07:32   (   0.01,-127.82) (   0.56,-130.25)  277.09                80
 06/13/2020   09:46:07   (   0.00,-127.79) (  -0.48,-125.73)  235.79                80
 06/14/2020   22:08:03   (  -0.02,-127.72) (  -0.73,-131.02)  375.52                80
 06/15/2020   21:51:57   (  -0.01,-127.69) (   0.25,-126.48)  137.65                80
 06/17/2020   10:13:45   (   0.02,-127.67) (   0.93,-131.75)  464.87                80
 06/18/2020   09:52:20   (   0.01,-127.63) (  -0.11,-127.22)   47.46                80
 06/20/2020   21:55:30   (  -0.01,-127.50) (  -0.12,-127.97)   53.67                80