Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 1 21.  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)
 01/21/2018   18:28:19   (   0.00,-134.80) (  -0.09,-134.24)   63.00                80
 01/23/2018   06:47:20   (  -0.01,-134.88) (  -0.92,-138.84)  451.94                80
 01/24/2018   06:24:01   (  -0.00,-134.91) (   0.25,-133.85)  121.13                80
 01/25/2018   18:42:52   (   0.01,-134.95) (   0.80,-138.41)  394.52                80
 01/26/2018   18:24:54   (   0.00,-134.99) (  -0.37,-133.43)  178.29                80
 01/28/2018   06:43:53   (  -0.00,-135.05) (  -0.69,-138.01)  338.07                80
 01/29/2018   06:20:35   (  -0.00,-135.08) (   0.48,-133.03)  234.00                80
 01/30/2018   18:39:26   (   0.01,-135.10) (   0.57,-137.59)  283.27                80
 01/31/2018   18:21:27   (   0.02,-135.13) (  -0.54,-132.59)  289.06                80
 02/02/2018   06:40:27   (  -0.03,-135.19) (  -0.45,-137.20)  227.62                80
 02/03/2018   06:17:07   (  -0.03,-135.22) (   0.66,-132.20)  344.15                80