Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2018 12 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/10/2018   08:39:30   (   0.00,-104.22) (   0.86,-108.14)  446.24                80
 12/11/2018   08:18:05   (   0.02,-104.22) (  -0.11,-103.60)   69.79                80
 12/13/2018   20:21:16   (  -0.01,-104.02) (  -0.11,-104.37)   39.81                80
 12/14/2018   20:05:11   (  -0.01,-104.03) (   0.92, -99.84)  477.54                80
 12/16/2018   08:26:59   (  -0.01,-104.24) (   0.21,-105.12)  101.31                80
 12/17/2018   08:05:35   (   0.01,-104.23) (  -0.82,-100.59)  414.91                80
 12/18/2018   20:27:30   (   0.01,-104.03) (  -0.42,-105.89)  212.54                80
 12/19/2018   20:11:26   (   0.00,-104.03) (   0.61,-101.36)  304.62                80
 12/21/2018   08:33:14   (  -0.01,-104.25) (   0.52,-106.64)  272.70                80
 12/22/2018   08:11:49   (  -0.00,-104.24) (  -0.45,-102.10)  243.26                80