Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2017 12 30.  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)
 12/31/2017   06:20:37   (   0.07,-135.22) (   0.55,-133.04)  248.55                80
 01/01/2018   18:39:29   (  -0.06,-135.13) (   0.48,-137.59)  280.41                80
 01/02/2018   18:21:29   (  -0.06,-135.10) (  -0.62,-132.60)  285.77                80
 01/04/2018   06:40:29   (   0.05,-135.11) (  -0.42,-137.19)  237.09                80
 01/05/2018   06:17:10   (   0.05,-135.08) (   0.68,-132.19)  328.54                80
 01/06/2018   18:36:01   (  -0.04,-134.98) (   0.35,-136.75)  201.45                80
 01/07/2018   18:18:02   (  -0.04,-134.95) (  -0.76,-131.76)  364.43                80
 01/09/2018   06:37:02   (   0.03,-134.96) (  -0.28,-136.35)  158.48                80
 01/10/2018   06:13:43   (   0.04,-134.93) (   0.83,-131.36)  406.77                80
 01/11/2018   18:32:34   (  -0.03,-134.82) (   0.21,-135.91)  124.40                80
 01/12/2018   18:14:34   (  -0.04,-134.78) (  -0.90,-130.92)  440.84                80