Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 11 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/27/2018   22:02:42   (  -0.05,-128.35) (  -0.37,-129.67)  150.43                80
 11/28/2018   21:46:38   (  -0.06,-128.37) (   0.66,-125.14)  368.57                80
 11/30/2018   10:05:46   (   0.03,-128.51) (   0.47,-130.42)  218.51                80
 12/01/2018   09:49:42   (   0.05,-128.52) (  -0.55,-125.89)  299.90                80
 12/02/2018   22:08:58   (  -0.02,-128.45) (  -0.64,-131.20)  313.92                80
 12/03/2018   21:52:53   (  -0.03,-128.47) (   0.38,-126.67)  204.87                80
 12/05/2018   10:12:02   (   0.01,-128.60) (   0.75,-131.95)  381.62                80
 12/06/2018   09:55:56   (   0.03,-128.61) (  -0.22,-127.41)  136.46                80
 12/07/2018   22:15:13   (  -0.00,-128.52) (  -0.97,-132.72)  478.96                80
 12/08/2018   21:59:08   (  -0.02,-128.54) (   0.06,-128.19)   39.19                80