Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 11 27.  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   22:02:43   (  -0.05,-128.35) (  -0.32,-129.68)  150.30                80
 11/28/2018   21:46:38   (  -0.06,-128.38) (   0.64,-125.14)  368.73                80
 11/30/2018   10:05:46   (   0.03,-128.51) (   0.49,-130.42)  218.53                80
 12/01/2018   09:49:41   (   0.05,-128.52) (  -0.54,-125.89)  299.91                80
 12/02/2018   22:08:58   (  -0.02,-128.45) (  -0.66,-131.19)  313.69                80
 12/03/2018   21:52:53   (  -0.03,-128.47) (   0.37,-126.67)  205.12                80
 12/05/2018   10:12:02   (   0.01,-128.60) (   0.76,-131.95)  381.52                80
 12/06/2018   09:55:57   (   0.03,-128.61) (  -0.27,-127.42)  136.58                80
 12/07/2018   22:15:13   (  -0.00,-128.52) (  -0.92,-132.73)  478.63                80
 12/08/2018   21:59:08   (  -0.02,-128.54) (   0.05,-128.19)   39.57                80
 12/11/2018   09:59:32   (   0.01,-128.68) (   0.06,-128.94)   29.70                80