Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 6 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)
 06/22/2018   18:22:40   (  -0.18,-134.91) (  -0.11,-135.12)   23.79                80
 06/25/2018   06:18:17   (   0.17,-135.00) (   0.22,-134.72)   31.61                80
 06/26/2018   18:39:46   (  -0.15,-135.07) (   0.77,-139.29)  481.03                80
 06/27/2018   18:16:25   (  -0.17,-135.10) (  -0.33,-134.29)   91.48                80
 06/29/2018   06:38:03   (   0.15,-135.14) (  -0.65,-138.90)  427.42                80
 06/30/2018   06:14:42   (   0.17,-135.18) (   0.45,-133.90)  144.77                80
 07/01/2018   18:36:11   (  -0.15,-135.23) (   0.54,-138.47)  368.76                80
 07/02/2018   18:12:50   (  -0.18,-135.26) (  -0.56,-133.47)  203.08                80
 07/04/2018   06:34:27   (   0.15,-135.29) (  -0.49,-138.07)  316.68                80
 07/05/2018   06:11:06   (   0.17,-135.32) (   0.67,-133.08)  254.93                80