Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 4 25.  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)
 04/25/2018   06:41:37   (   0.10,-135.44) (  -0.47,-138.10)  302.92                34
 04/26/2018   06:22:51   (   0.10,-135.45) (   0.61,-133.10)  267.61                80
 04/27/2018   18:39:01   (  -0.11,-135.47) (   0.41,-137.66)  250.31                80
 04/28/2018   18:21:01   (  -0.10,-135.48) (  -0.73,-132.67)  319.98                80
 04/30/2018   06:37:22   (   0.11,-135.49) (  -0.27,-137.28)  202.83                80
 05/01/2018   06:19:21   (   0.11,-135.50) (   0.82,-132.28)  367.16                80
 05/02/2018   18:35:32   (  -0.12,-135.51) (   0.19,-136.84)  151.63                80
 05/03/2018   18:17:32   (  -0.12,-135.51) (  -0.96,-131.85)  417.88                80
 05/05/2018   06:33:51   (   0.13,-135.51) (  -0.08,-136.44)  106.04                80
 05/06/2018   06:15:51   (   0.13,-135.51) (   1.02,-131.44)  463.21                80
 05/07/2018   18:32:01   (  -0.14,-135.51) (  -0.02,-136.01)   56.50                80