Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 6 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)
 06/22/2018   06:42:50   (   0.16,-134.89) (  -0.55,-138.09)  364.82                80
 06/23/2018   06:19:31   (   0.18,-134.93) (   0.61,-133.10)  208.45                80
 06/24/2018   18:41:01   (  -0.16,-134.99) (   0.45,-137.66)  303.74                80
 06/25/2018   18:17:42   (  -0.17,-135.03) (  -0.71,-132.67)  269.06                80
 06/27/2018   06:39:20   (   0.15,-135.08) (  -0.34,-137.26)  248.94                80
 06/28/2018   06:16:01   (   0.17,-135.11) (   0.81,-132.27)  323.50                80
 06/29/2018   18:37:31   (  -0.15,-135.17) (   0.24,-136.83)  189.71                80
 06/30/2018   18:14:11   (  -0.18,-135.20) (  -0.92,-131.84)  382.31                80
 07/02/2018   06:35:50   (   0.15,-135.24) (  -0.13,-136.43)  136.68                80
 07/03/2018   06:12:30   (   0.18,-135.27) (   1.03,-131.45)  435.12                80
 07/04/2018   18:34:01   (  -0.15,-135.32) (   0.02,-136.00)   78.83                80
 07/05/2018   18:10:41   (  -0.17,-135.34) (  -1.14,-131.02)  492.62                80