Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and METOP-A
TLE Epoch: 2018 4 21.  Predictions up to the next  14.0 days:

     Date     Time(LANDSAT-8) LANDSAT-8 Lat/Lon Date Time(METOP-A) METOP-A Lat/Lon    Distance(km)  Time Diff(sec)
 04/23/2018   08:32:19   (  81.33,  94.55) 04/23/2018   08:31:52  (  81.33,  94.67)    2.02                27
 04/23/2018   09:21:46   ( -81.32, -97.91) 04/23/2018   09:22:33  ( -81.33, -97.93)    0.66                47
 04/26/2018   04:06:33   (  81.32, 160.90) 04/26/2018   04:06:10  (  81.33, 161.09)    3.25                23
 04/26/2018   04:55:59   ( -81.34, -31.15) 04/26/2018   04:56:50  ( -81.34, -31.09)    1.10                51
 04/28/2018   23:40:46   (  81.32,-132.79) 04/28/2018   23:40:28  (  81.32,-132.89)    1.63                18
 04/29/2018   00:30:12   ( -81.34,  35.18) 04/29/2018   00:31:07  ( -81.34,  35.34)    2.68                55
 05/01/2018   19:14:59   (  81.33, -66.14) 05/01/2018   19:14:45  (  81.33, -66.10)    0.80                14
 05/01/2018   20:04:26   ( -81.33, 101.47) 05/01/2018   20:05:26  ( -81.33, 101.37)    1.81                60
 05/04/2018   14:49:13   (  81.32,   0.08) 05/04/2018   14:49:04  (  81.32,  -0.10)    3.07                 9