Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 6 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/09/2020   22:01:50   (  -0.00,-127.88) (  -0.38,-129.52)  187.99                80
 06/10/2020   21:45:45   (   0.00,-127.85) (   0.66,-125.00)  325.37                80
 06/12/2020   10:07:32   (   0.01,-127.82) (   0.58,-130.25)  277.66                80
 06/13/2020   09:46:07   (   0.00,-127.78) (  -0.46,-125.72)  235.10                80
 06/14/2020   22:08:02   (  -0.02,-127.71) (  -0.76,-131.01)  376.07                80
 06/15/2020   21:51:58   (  -0.01,-127.68) (   0.29,-126.49)  137.00                80
 06/17/2020   10:13:44   (   0.02,-127.65) (   0.96,-131.74)  466.03                80
 06/18/2020   09:52:20   (   0.01,-127.62) (  -0.08,-127.21)   46.09                80
 06/20/2020   21:55:30   (  -0.01,-127.49) (  -0.14,-127.97)   55.01                80
 06/21/2020   21:39:25   (  -0.01,-127.45) (   0.90,-123.44)  457.01                80
 06/23/2020   10:01:12   (   0.02,-127.41) (   0.28,-128.71)  147.39                80