Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 1 22.  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)
 01/23/2018   06:47:20   (  -0.01,-134.88) (  -0.87,-138.85)  451.93                80
 01/24/2018   06:24:01   (  -0.00,-134.91) (   0.24,-133.85)  121.18                80
 01/25/2018   18:42:52   (   0.01,-134.95) (   0.80,-138.41)  394.29                80
 01/26/2018   18:24:54   (   0.00,-134.99) (  -0.37,-133.43)  178.56                80
 01/28/2018   06:43:54   (  -0.00,-135.06) (  -0.64,-138.03)  337.83                80
 01/29/2018   06:20:35   (  -0.00,-135.08) (   0.47,-133.03)  234.27                80
 01/30/2018   18:39:26   (   0.01,-135.11) (   0.58,-137.59)  282.81                80
 01/31/2018   18:21:26   (   0.02,-135.14) (  -0.53,-132.59)  289.58                80
 02/02/2018   06:40:27   (  -0.03,-135.20) (  -0.47,-137.19)  227.16                80
 02/03/2018   06:17:07   (  -0.03,-135.22) (   0.65,-132.20)  344.64                80
 02/04/2018   18:36:00   (   0.03,-135.24) (   0.35,-136.77)  173.35                80
 02/05/2018   18:18:00   (   0.02,-135.27) (  -0.76,-131.77)  398.51                80