Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 7 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)
 07/22/2018   06:19:06   (   0.11,-135.50) (   0.64,-133.09)  273.45                80
 07/23/2018   18:40:36   (  -0.07,-135.53) (   0.38,-137.66)  242.05                80
 07/24/2018   18:17:15   (  -0.10,-135.52) (  -0.73,-132.66)  326.33                80
 07/26/2018   06:38:54   (   0.06,-135.49) (  -0.34,-137.24)  200.43                80
 07/27/2018   06:15:34   (   0.09,-135.48) (   0.82,-132.26)  367.61                80
 07/28/2018   18:37:04   (  -0.06,-135.51) (   0.25,-136.81)  148.77                80
 07/29/2018   18:13:44   (  -0.09,-135.50) (  -0.92,-131.83)  418.93                80
 07/31/2018   06:35:22   (   0.05,-135.45) (  -0.15,-136.41)  108.74                80
 08/01/2018   06:12:02   (   0.08,-135.44) (   0.95,-131.41)  458.70                80
 08/02/2018   18:33:32   (  -0.04,-135.46) (   0.05,-135.98)   58.52                80