Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2017 12 28.  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)
 12/30/2017   18:24:35   (  -0.07,-135.18) (  -0.12,-135.06)   15.03                80
 01/02/2018   06:22:53   (   0.06,-135.17) (   0.20,-134.66)   58.94                80
 01/03/2018   18:41:42   (  -0.05,-135.07) (   0.86,-139.21)  471.55                80
 01/04/2018   18:23:42   (  -0.05,-135.04) (  -0.26,-134.22)   94.56                80
 01/06/2018   06:42:40   (   0.04,-135.05) (  -0.77,-138.81)  427.69                80
 01/07/2018   06:19:19   (   0.05,-135.02) (   0.29,-133.80)  137.95                80
 01/08/2018   18:38:09   (  -0.04,-134.91) (   0.72,-138.37)  393.34                80
 01/09/2018   18:20:09   (  -0.04,-134.88) (  -0.40,-133.38)  172.43                80
 01/11/2018   06:39:06   (   0.03,-134.89) (  -0.67,-137.96)  350.17                80