Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 6 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/04/2020   21:55:50   (   0.01,-128.02) (   0.01,-128.03)    1.97                67
 06/07/2020   10:01:19   (  -0.01,-127.97) (   0.20,-128.76)   90.17                80
 06/08/2020   09:39:54   (  -0.02,-127.95) (  -0.84,-124.23)  423.09                80
 06/09/2020   22:01:50   (  -0.00,-127.88) (  -0.38,-129.52)  187.37                80
 06/10/2020   21:45:45   (   0.01,-127.86) (   0.66,-125.00)  326.32                80
 06/12/2020   10:07:33   (   0.01,-127.84) (   0.53,-130.26)  275.29                80
 06/13/2020   09:46:07   (   0.00,-127.81) (  -0.45,-125.72)  237.86                80
 06/14/2020   22:08:02   (  -0.02,-127.74) (  -0.76,-131.02)  373.64                80
 06/15/2020   21:51:58   (  -0.01,-127.71) (   0.28,-126.49)  139.74                80