Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and METOP-A
TLE Epoch: 2017 12 20.  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)
 12/20/2017   13:05:15   (  81.26,  25.71) 12/20/2017   13:04:07  (  81.26,  25.66)    0.96                68
 12/20/2017   13:54:41   ( -81.28,-166.36) 12/20/2017   13:54:46  ( -81.29,-166.17)    3.29                 5
 12/23/2017   08:39:30   (  81.28,  92.45) 12/23/2017   08:38:25  (  81.28,  92.53)    1.31                65
 12/23/2017   09:28:57   ( -81.28, -99.97) 12/23/2017   09:29:06  ( -81.28,-100.05)    1.43                 9
 12/26/2017   04:13:45   (  81.27, 158.77) 12/26/2017   04:12:44  (  81.27, 158.60)    2.86                61
 12/26/2017   05:03:11   ( -81.29, -33.25) 12/26/2017   05:03:23  ( -81.29, -33.18)    1.16                12
 12/28/2017   23:48:01   (  81.26,-134.96) 12/28/2017   23:47:03  (  81.27,-134.96)    0.66                58
 12/29/2017   00:37:27   ( -81.28,  33.04) 12/29/2017   00:37:43  ( -81.28,  32.88)    2.63                16
 12/31/2017   19:22:16   (  81.27, -68.37) 12/31/2017   19:21:22  (  81.27, -68.54)    2.92                54