Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2018 12 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/19/2018   20:11:25   (  -0.00,-104.04) (   0.60,-101.36)  305.52                80
 12/21/2018   08:33:14   (  -0.01,-104.25) (   0.53,-106.64)  271.64                80
 12/22/2018   08:11:49   (  -0.00,-104.25) (  -0.51,-102.11)  244.50                80
 12/23/2018   20:33:44   (   0.01,-104.03) (  -0.73,-107.40)  384.71                80
 12/24/2018   20:17:39   (   0.01,-104.03) (   0.24,-102.86)  132.24                80
 12/26/2018   08:39:28   (  -0.02,-104.26) (   0.83,-108.16)  443.60                80
 12/27/2018   08:18:03   (  -0.01,-104.26) (  -0.15,-103.62)   72.54                80
 12/29/2018   20:21:14   (   0.02,-104.03) (  -0.05,-104.39)   40.70                80
 12/30/2018   20:05:08   (   0.01,-104.03) (   0.93, -99.85)  476.58                80
 01/01/2019   08:26:57   (  -0.03,-104.28) (   0.15,-105.14)   97.98                80
 01/02/2019   08:05:32   (  -0.01,-104.28) (  -0.83,-100.60)  418.55                80