Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 6 27.  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)
 06/28/2018   06:16:01   (   0.17,-135.10) (   0.81,-132.27)  322.05                80
 06/29/2018   18:37:31   (  -0.15,-135.16) (   0.24,-136.83)  190.39                80
 06/30/2018   18:14:11   (  -0.17,-135.19) (  -0.92,-131.84)  381.37                80
 07/02/2018   06:35:50   (   0.15,-135.21) (  -0.13,-136.43)  139.24                80
 07/03/2018   06:12:30   (   0.17,-135.24) (   1.03,-131.45)  432.29                80
 07/04/2018   18:34:00   (  -0.15,-135.29) (   0.01,-136.00)   80.83                80
 07/05/2018   18:10:41   (  -0.17,-135.32) (  -1.15,-131.02)  490.34                80
 07/07/2018   06:32:19   (   0.15,-135.33) (   0.10,-135.61)   31.23                80
 07/09/2018   18:27:49   (  -0.14,-135.39) (  -0.16,-135.17)   25.30                80
 07/11/2018   06:49:27   (   0.11,-135.39) (  -0.89,-139.75)  497.81                80