Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 6 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)
 06/02/2020   09:52:27   (  -0.02,-128.09) (  -0.21,-127.27)   93.34                80
 06/04/2020   21:55:37   (   0.01,-128.02) (   0.03,-128.04)    3.15                80
 06/07/2020   10:01:19   (  -0.01,-127.98) (   0.18,-128.76)   90.03                80
 06/08/2020   09:39:55   (  -0.02,-127.95) (  -0.86,-124.24)  423.17                80
 06/09/2020   22:01:50   (  -0.00,-127.88) (  -0.36,-129.53)  187.36                80
 06/10/2020   21:45:45   (   0.01,-127.86) (   0.62,-124.99)  326.33                80
 06/12/2020   10:07:32   (   0.01,-127.84) (   0.57,-130.25)  275.20                80
 06/13/2020   09:46:07   (   0.00,-127.81) (  -0.47,-125.73)  237.94                80
 06/14/2020   22:08:03   (  -0.02,-127.74) (  -0.74,-131.02)  373.61                80