Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and METOP-A
TLE Epoch: 2021 4 19.  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)
 04/21/2021   16:59:25   ( -81.42, 149.67) 04/21/2021   16:58:31  ( -81.41, 149.48)    3.28                54
 04/21/2021   17:48:52   (  81.41, -42.99) 04/21/2021   17:49:11  (  81.40, -42.82)    2.73                19
 04/24/2021   12:33:39   ( -81.42,-143.98) 04/24/2021   12:32:53  ( -81.41,-143.91)    1.75                46
 04/24/2021   13:23:06   (  81.40,  23.33) 04/24/2021   13:23:34  (  81.41,  23.35)    0.85                28
 04/27/2021   08:07:53   ( -81.41, -77.68) 04/27/2021   08:07:16  ( -81.41, -77.71)    0.54                37
 04/27/2021   08:57:19   (  81.41,  89.99) 04/27/2021   08:57:56  (  81.40,  89.91)    1.89                37
 04/30/2021   03:42:06   ( -81.40, -11.41) 04/30/2021   03:41:38  ( -81.41, -11.52)    2.27                28
 04/30/2021   04:31:32   (  81.40, 156.23) 04/30/2021   04:32:18  (  81.41, 156.06)    3.02                46
 05/02/2021   23:16:19   ( -81.41,  55.20) 05/02/2021   23:16:00  ( -81.41,  55.04)    2.78                19