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

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/07/2020   10:01:19   (  -0.00,-127.97) (   0.18,-128.76)   90.78                80
 06/08/2020   09:39:55   (  -0.02,-127.94) (  -0.85,-124.23)  422.23                80
 06/09/2020   22:01:50   (  -0.00,-127.88) (  -0.36,-129.53)  187.98                80
 06/10/2020   21:45:44   (   0.00,-127.85) (   0.62,-124.99)  325.56                80
 06/12/2020   10:07:32   (   0.01,-127.83) (   0.57,-130.25)  276.75                80
 06/13/2020   09:46:07   (   0.00,-127.79) (  -0.47,-125.72)  236.19                80
 06/14/2020   22:08:03   (  -0.02,-127.72) (  -0.75,-131.02)  375.16                80
 06/15/2020   21:51:57   (  -0.01,-127.69) (   0.24,-126.48)  138.08                80
 06/17/2020   10:13:44   (   0.02,-127.67) (   0.95,-131.74)  464.24                80
 06/18/2020   09:52:20   (   0.01,-127.64) (  -0.09,-127.22)   48.06                80