Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2017 12 24.  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)
 12/25/2017   18:28:08   (  -0.08,-135.28) (   0.05,-135.89)   69.57                80
 12/26/2017   18:10:08   (  -0.08,-135.26) (  -1.06,-130.90)  497.82                80
 12/28/2017   06:29:06   (   0.07,-135.29) (   0.03,-135.49)   23.08                80
 12/30/2017   18:27:15   (  -0.07,-135.17) (  -0.08,-135.05)   13.74                80
 01/02/2018   06:22:53   (   0.06,-135.16) (   0.17,-134.65)   57.87                80
 01/03/2018   18:41:42   (  -0.05,-135.05) (   0.90,-139.20)  473.62                80
 01/04/2018   18:23:41   (  -0.05,-135.02) (  -0.22,-134.21)   92.26                80
 01/06/2018   06:42:40   (   0.04,-135.03) (  -0.80,-138.80)  429.54                80
 01/07/2018   06:19:19   (   0.05,-135.00) (   0.32,-133.81)  135.88                80