Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2018 12 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/02/2018   20:27:32   (  -0.03,-104.02) (  -0.43,-105.87)  210.33                80
 12/03/2018   20:11:26   (  -0.04,-104.03) (   0.54,-101.33)  307.25                80
 12/05/2018   08:33:16   (   0.02,-104.21) (   0.53,-106.62)  274.43                80
 12/06/2018   08:11:50   (   0.03,-104.21) (  -0.44,-102.08)  241.83                80
 12/07/2018   20:33:46   (  -0.01,-104.03) (  -0.76,-107.39)  382.76                80
 12/08/2018   20:17:41   (  -0.02,-104.04) (   0.21,-102.85)  134.77                80
 12/10/2018   08:39:30   (   0.00,-104.24) (   0.85,-108.14)  444.64                80
 12/11/2018   08:18:05   (   0.02,-104.24) (  -0.12,-103.60)   71.68                80
 12/13/2018   20:21:16   (  -0.01,-104.05) (  -0.10,-104.37)   37.26                80
 12/14/2018   20:05:11   (  -0.01,-104.06) (   0.93, -99.84)  480.40                80