Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 4 7.  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)
 04/08/2018   18:32:15   (  -0.06,-135.07) (   0.15,-135.96)  102.08                80
 04/09/2018   18:14:16   (  -0.05,-135.10) (  -0.98,-130.97)  470.46                80
 04/11/2018   06:30:36   (   0.06,-135.15) (  -0.04,-135.57)   48.25                80
 04/13/2018   18:28:47   (  -0.06,-135.22) (  -0.05,-135.14)    8.80                80
 04/16/2018   06:29:48   (   0.07,-135.28) (   0.17,-134.75)   60.38                80
 04/17/2018   18:45:59   (  -0.08,-135.31) (   0.81,-139.32)  456.51                80
 04/18/2018   18:27:59   (  -0.07,-135.33) (  -0.32,-134.33)  114.55                80
 04/20/2018   06:44:20   (   0.09,-135.35) (  -0.69,-138.93)  406.96                80
 04/21/2018   06:26:19   (   0.09,-135.37) (   0.38,-133.93)  163.59                80