Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2017 11 18.  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)
 11/19/2017   18:29:04   (  -0.21,-135.00) (  -0.18,-135.09)   10.61                80
 11/22/2017   06:27:27   (   0.20,-135.11) (   0.31,-134.70)   47.16                80
 11/23/2017   18:46:18   (  -0.19,-135.11) (   0.75,-139.25)  472.34                80
 11/24/2017   18:28:19   (  -0.19,-135.14) (  -0.40,-134.27)   99.81                80
 11/26/2017   06:47:21   (   0.18,-135.22) (  -0.62,-138.87)  414.72                80
 11/27/2017   06:24:01   (   0.18,-135.24) (   0.47,-133.87)  156.33                80
 11/28/2017   18:42:53   (  -0.17,-135.23) (   0.53,-138.43)  364.78                80
 11/29/2017   18:24:54   (  -0.18,-135.25) (  -0.56,-133.43)  206.60                80
 12/01/2017   06:43:55   (   0.16,-135.33) (  -0.46,-138.03)  308.62                80