Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 1 20.  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)
 01/21/2018   06:32:00   (  -0.00,-134.79) (  -0.31,-136.30)  171.08                80
 01/22/2018   06:08:39   (   0.00,-134.83) (   0.81,-131.30)  402.49                80
 01/23/2018   18:30:08   (   0.01,-134.88) (   0.25,-135.86)  112.31                80
 01/24/2018   18:09:28   (   0.00,-134.92) (  -0.87,-130.86)  461.09                80
 01/26/2018   06:28:26   (  -0.00,-134.99) (  -0.13,-135.46)   54.97                80
 01/28/2018   18:26:36   (   0.00,-135.05) (   0.01,-135.04)    1.47                80
 01/31/2018   06:22:14   (  -0.01,-135.14) (   0.11,-134.65)   56.33                80
 02/01/2018   18:41:03   (   0.03,-135.16) (   0.95,-139.20)  461.24                80
 02/02/2018   18:23:03   (   0.03,-135.18) (  -0.18,-134.21)  110.92                80