Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 11 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/15/2018   09:46:59   (   0.12,-128.10) (  -0.38,-125.83)  258.23                80
 11/16/2018   22:08:56   (  -0.08,-128.05) (  -0.77,-131.15)  352.75                80
 11/17/2018   21:52:52   (  -0.10,-128.08) (   0.25,-126.62)  167.50                80
 11/19/2018   10:12:00   (   0.07,-128.23) (   0.88,-131.90)  417.58                80
 11/20/2018   09:55:55   (   0.08,-128.26) (  -0.14,-127.37)  101.91                80
 11/22/2018   21:59:07   (  -0.07,-128.22) (  -0.04,-128.15)    8.77                80
 11/25/2018   09:59:30   (   0.07,-128.38) (   0.21,-128.89)   58.50                80
 11/26/2018   09:43:26   (   0.08,-128.40) (  -0.82,-124.36)  459.85                80
 11/27/2018   22:02:42   (  -0.05,-128.31) (  -0.38,-129.67)  155.09                80