Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2017 12 7.  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)
 12/08/2017   18:36:02   (  -0.14,-135.38) (   0.17,-136.77)  159.05                80
 12/09/2017   18:18:02   (  -0.14,-135.39) (  -0.93,-131.77)  411.04                80
 12/11/2017   06:37:04   (   0.13,-135.43) (  -0.08,-136.38)  107.36                80
 12/12/2017   06:13:44   (   0.13,-135.44) (   1.01,-131.38)  461.89                80
 12/13/2017   18:32:35   (  -0.12,-135.41) (   0.02,-135.94)   60.88                80
 12/16/2017   06:33:37   (   0.12,-135.46) (   0.07,-135.54)   10.37                80
 12/18/2017   18:31:50   (  -0.11,-135.41) (  -0.20,-135.11)   34.36                80
 12/20/2017   06:50:50   (   0.09,-135.46) (  -0.86,-139.70)  484.30                80
 12/21/2017   06:27:31   (   0.10,-135.45) (   0.24,-134.71)   83.85                80