Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 4 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-A Lat/Lon    Distance(km)  Time Diff(sec)
 04/23/2018   06:23:34   (   0.09,-135.42) (   0.10,-135.53)   11.80                80
 04/25/2018   18:24:21   (  -0.10,-135.45) (  -0.16,-135.09)   40.51                80
 04/27/2018   06:40:40   (   0.11,-135.47) (  -0.85,-139.69)  481.19                80
 04/28/2018   06:22:39   (   0.10,-135.48) (   0.29,-134.70)   89.28                80
 04/29/2018   18:38:49   (  -0.11,-135.49) (   0.73,-139.26)  429.84                80
 04/30/2018   18:20:48   (  -0.11,-135.50) (  -0.40,-134.27)  140.21                80
 05/02/2018   06:37:05   (   0.12,-135.51) (  -0.66,-138.87)  382.46                80
 05/03/2018   06:19:05   (   0.12,-135.52) (   0.49,-133.88)  187.25                80
 05/04/2018   18:37:54   (  -0.13,-135.52) (   0.54,-138.44)  333.02                80
 05/05/2018   18:17:14   (  -0.13,-135.52) (  -0.60,-133.45)  236.22                80