Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2017 11 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 11/22/2017   06:27:26   (   0.20,-135.11) (   0.29,-134.69)   46.89                80
 11/23/2017   18:46:18   (  -0.19,-135.11) (   0.71,-139.26)  472.74                80
 11/24/2017   18:28:19   (  -0.19,-135.13) (  -0.38,-134.26)   99.34                80
 11/26/2017   06:47:20   (   0.18,-135.22) (  -0.63,-138.86)  415.18                80
 11/27/2017   06:24:01   (   0.18,-135.24) (   0.46,-133.86)  155.82                80
 11/28/2017   18:42:53   (  -0.17,-135.22) (   0.53,-138.43)  365.47                80
 11/29/2017   18:24:53   (  -0.18,-135.24) (  -0.56,-133.43)  205.85                80
 12/01/2017   06:43:55   (   0.17,-135.32) (  -0.45,-138.03)  309.35                80
 12/02/2017   06:20:36   (   0.17,-135.33) (   0.71,-133.05)  260.73                80
 12/03/2017   18:39:28   (  -0.16,-135.30) (   0.34,-137.60)  262.65                80
 12/04/2017   18:21:28   (  -0.16,-135.31) (  -0.76,-132.61)  307.61                80