Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 11 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/12/2018   21:46:35   (  -0.13,-127.92) (   0.51,-125.08)  323.80                80
 11/14/2018   10:05:43   (   0.10,-128.07) (   0.64,-130.36)  261.71                80
 11/15/2018   09:46:59   (   0.12,-128.10) (  -0.38,-125.83)  258.19                80
 11/16/2018   22:08:56   (  -0.08,-128.05) (  -0.76,-131.15)  352.81                80
 11/17/2018   21:52:52   (  -0.10,-128.08) (   0.26,-126.62)  167.45                80
 11/19/2018   10:12:00   (   0.07,-128.23) (   0.88,-131.90)  417.59                80
 11/20/2018   09:55:56   (   0.08,-128.26) (  -0.14,-127.37)  101.93                80
 11/22/2018   21:59:07   (  -0.07,-128.22) (  -0.04,-128.15)    8.82                80
 11/25/2018   10:00:19   (   0.06,-128.39) (   0.15,-128.90)   58.44                32
 11/26/2018   09:43:26   (   0.08,-128.40) (  -0.81,-124.36)  459.92                80