Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2017 12 29.  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)
 12/30/2017   06:43:56   (   0.06,-135.25) (  -0.58,-138.03)  317.42                80
 12/31/2017   06:20:38   (   0.07,-135.22) (   0.58,-133.04)  248.74                80
 01/01/2018   18:39:28   (  -0.06,-135.13) (   0.51,-137.59)  280.44                80
 01/02/2018   18:21:29   (  -0.06,-135.10) (  -0.60,-132.59)  285.74                80
 01/04/2018   06:40:30   (   0.05,-135.11) (  -0.39,-137.20)  236.98                80
 01/05/2018   06:17:11   (   0.05,-135.08) (   0.71,-132.20)  328.66                80
 01/06/2018   18:36:01   (  -0.04,-134.98) (   0.38,-136.75)  201.55                80
 01/07/2018   18:18:02   (  -0.04,-134.95) (  -0.79,-131.76)  364.35                80
 01/09/2018   06:37:03   (   0.03,-134.96) (  -0.25,-136.36)  158.44                80
 01/10/2018   06:13:43   (   0.04,-134.93) (   0.86,-131.36)  406.84                80
 01/11/2018   18:32:34   (  -0.03,-134.82) (   0.18,-135.92)  124.60                80
 01/12/2018   18:14:35   (  -0.04,-134.78) (  -0.92,-130.92)  440.68                80