Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 5 21.  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)
 05/21/2018   18:44:54   (  -0.16,-135.28) (   0.56,-138.51)  367.94                80
 05/22/2018   18:21:34   (  -0.17,-135.26) (  -0.53,-133.51)  198.45                80
 05/24/2018   06:40:33   (   0.16,-135.19) (  -0.50,-138.10)  332.02                80
 05/25/2018   06:22:34   (   0.17,-135.17) (   0.64,-133.12)  234.39                80
 05/26/2018   18:41:24   (  -0.16,-135.15) (   0.41,-137.67)  287.17                80
 05/27/2018   18:18:05   (  -0.17,-135.12) (  -0.74,-132.68)  278.78                80
 05/29/2018   06:39:43   (   0.17,-135.05) (  -0.34,-137.27)  252.54                80
 05/30/2018   06:18:05   (   0.17,-135.02) (   0.80,-132.28)  313.12                21
 05/31/2018   18:37:54   (  -0.17,-135.00) (   0.25,-136.83)  209.51                80
 06/01/2018   18:14:34   (  -0.18,-134.96) (  -0.90,-131.85)  355.61                80
 06/03/2018   06:36:13   (   0.17,-134.88) (  -0.18,-136.43)  176.82                80
 06/04/2018   06:12:53   (   0.18,-134.84) (   0.97,-131.44)  388.11                80