Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 11 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/14/2018   10:05:43   (   0.10,-128.07) (   0.64,-130.36)  261.49                80
 11/15/2018   09:46:59   (   0.12,-128.10) (  -0.38,-125.83)  258.48                80
 11/16/2018   22:08:56   (  -0.08,-128.05) (  -0.77,-131.15)  352.34                80
 11/17/2018   21:52:52   (  -0.10,-128.09) (   0.25,-126.62)  167.96                80
 11/19/2018   10:12:00   (   0.07,-128.24) (   0.88,-131.90)  417.09                80
 11/20/2018   09:55:55   (   0.08,-128.27) (  -0.14,-127.37)  102.47                80
 11/22/2018   21:59:07   (  -0.07,-128.23) (  -0.04,-128.15)    9.48                80
 11/25/2018   09:59:31   (   0.06,-128.39) (   0.16,-128.90)   57.60                80
 11/26/2018   09:43:26   (   0.08,-128.41) (  -0.81,-124.36)  460.79                80