Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2017 12 28.  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)
 12/30/2017   06:43:57   (   0.06,-135.25) (  -0.54,-138.03)  317.29                80
 12/31/2017   06:20:38   (   0.07,-135.22) (   0.56,-133.04)  248.80                80
 01/01/2018   18:39:29   (  -0.06,-135.13) (   0.47,-137.60)  280.72                80
 01/02/2018   18:21:29   (  -0.06,-135.10) (  -0.64,-132.60)  285.42                80
 01/04/2018   06:40:30   (   0.05,-135.11) (  -0.41,-137.19)  237.06                80
 01/05/2018   06:17:10   (   0.05,-135.08) (   0.70,-132.20)  328.52                80
 01/06/2018   18:36:01   (  -0.04,-134.98) (   0.34,-136.75)  202.03                80
 01/07/2018   18:18:02   (  -0.04,-134.95) (  -0.77,-131.76)  363.80                80
 01/09/2018   06:37:02   (   0.04,-134.96) (  -0.27,-136.35)  158.73                80
 01/10/2018   06:13:43   (   0.04,-134.92) (   0.84,-131.36)  406.48                80
 01/11/2018   18:32:34   (  -0.03,-134.81) (   0.20,-135.91)  125.26                80