Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 4 16.  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)
 04/17/2018   18:45:58   (  -0.08,-135.32) (   0.84,-139.31)  455.30                80
 04/18/2018   18:27:59   (  -0.08,-135.34) (  -0.29,-134.32)  115.96                80
 04/20/2018   06:44:19   (   0.09,-135.37) (  -0.72,-138.92)  404.76                80
 04/21/2018   06:26:20   (   0.09,-135.39) (   0.41,-133.93)  166.02                80
 04/22/2018   18:42:30   (  -0.10,-135.40) (   0.62,-138.49)  352.41                80
 04/23/2018   18:24:30   (  -0.10,-135.41) (  -0.52,-133.50)  218.02                80
 04/25/2018   06:40:51   (   0.10,-135.44) (  -0.49,-138.10)  303.65                80
 04/26/2018   06:22:51   (   0.10,-135.45) (   0.64,-133.11)  266.81                80
 04/27/2018   18:39:02   (  -0.11,-135.46) (   0.39,-137.67)  251.89                80
 04/28/2018   18:21:02   (  -0.10,-135.47) (  -0.75,-132.68)  318.25                80
 04/30/2018   06:37:21   (   0.11,-135.48) (  -0.31,-137.27)  204.10                80