Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2018 12 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/23/2018   20:33:44   (   0.01,-104.03) (  -0.73,-107.40)  383.96                80
 12/24/2018   20:17:39   (   0.01,-104.04) (   0.24,-102.86)  133.19                80
 12/26/2018   08:39:28   (  -0.02,-104.27) (   0.83,-108.16)  442.85                80
 12/27/2018   08:18:03   (  -0.01,-104.26) (  -0.15,-103.62)   73.45                80
 12/29/2018   20:21:14   (   0.02,-104.04) (  -0.05,-104.39)   38.87                80
 12/30/2018   20:05:08   (   0.01,-104.05) (   0.93, -99.85)  478.59                80
 01/01/2019   08:26:57   (  -0.02,-104.29) (   0.14,-105.14)   96.13                80
 01/02/2019   08:05:32   (  -0.01,-104.29) (  -0.83,-100.60)  420.56                80
 01/03/2019   20:27:27   (   0.02,-104.06) (  -0.39,-105.90)  209.31                80
 01/04/2019   20:11:22   (   0.02,-104.07) (   0.59,-101.36)  308.15                80