Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and METOP-A
TLE Epoch: 2021 4 17.  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)
 04/18/2021   21:25:12   ( -81.42,  83.12) 04/18/2021   21:24:09  ( -81.42,  83.00)    1.93                63
 04/18/2021   22:14:38   (  81.42,-109.15) 04/18/2021   22:14:49  (  81.41,-109.29)    2.83                11
 04/21/2021   16:59:26   ( -81.41, 149.51) 04/21/2021   16:58:30  ( -81.41, 149.44)    1.11                56
 04/21/2021   17:48:52   (  81.42, -42.78) 04/21/2021   17:49:10  (  81.40, -42.88)    2.16                18
 04/24/2021   12:33:40   ( -81.41,-144.13) 04/24/2021   12:32:51  ( -81.41,-144.13)    0.25                49
 04/24/2021   13:23:06   (  81.41,  23.55) 04/24/2021   13:23:31  (  81.40,  23.51)    1.17                25
 04/27/2021   08:07:53   ( -81.40, -77.81) 04/27/2021   08:07:11  ( -81.41, -77.72)    1.65                42
 04/27/2021   08:57:19   (  81.40,  89.85) 04/27/2021   08:57:51  (  81.40,  89.88)    0.65                32
 04/30/2021   03:42:06   ( -81.42, -11.13) 04/30/2021   03:41:32  ( -81.41, -11.32)    3.22                34