Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 1 1.  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)
 01/01/2018   18:39:28   (  -0.06,-135.13) (   0.49,-137.59)  280.21                80
 01/02/2018   18:21:29   (  -0.06,-135.11) (  -0.61,-132.60)  285.98                80
 01/04/2018   06:40:29   (   0.05,-135.11) (  -0.43,-137.19)  237.26                80
 01/05/2018   06:17:10   (   0.05,-135.08) (   0.67,-132.19)  328.41                80
 01/06/2018   18:36:01   (  -0.04,-134.99) (   0.36,-136.75)  201.16                80
 01/07/2018   18:18:02   (  -0.04,-134.96) (  -0.75,-131.75)  364.74                80
 01/09/2018   06:37:02   (   0.03,-134.96) (  -0.29,-136.35)  158.57                80
 01/10/2018   06:13:42   (   0.04,-134.93) (   0.82,-131.35)  406.72                80
 01/11/2018   18:32:34   (  -0.03,-134.82) (   0.22,-135.91)  124.03                80
 01/12/2018   18:14:34   (  -0.04,-134.79) (  -0.89,-130.91)  441.23                80
 01/14/2018   06:33:35   (   0.03,-134.78) (  -0.14,-135.51)   82.77                80