Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 4 18.  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)
 04/20/2018   06:44:19   (   0.09,-135.38) (  -0.73,-138.92)  404.36                80
 04/21/2018   06:26:20   (   0.09,-135.39) (   0.41,-133.93)  166.52                80
 04/22/2018   18:42:31   (  -0.10,-135.41) (   0.56,-138.50)  351.88                80
 04/23/2018   18:24:30   (  -0.10,-135.42) (  -0.51,-133.50)  218.65                80
 04/25/2018   06:40:51   (   0.10,-135.45) (  -0.50,-138.10)  302.74                80
 04/26/2018   06:22:51   (   0.10,-135.46) (   0.63,-133.11)  267.80                80
 04/27/2018   18:39:01   (  -0.11,-135.47) (   0.40,-137.67)  250.88                80
 04/28/2018   18:21:02   (  -0.10,-135.48) (  -0.74,-132.68)  319.36                80
 04/30/2018   06:37:22   (   0.11,-135.50) (  -0.27,-137.28)  202.70                80
 05/01/2018   06:19:22   (   0.11,-135.50) (   0.81,-132.28)  367.28                80
 05/02/2018   18:38:13   (  -0.12,-135.51) (   0.16,-136.85)  152.38                80