Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and METOP-A
TLE Epoch: 2021 4 18.  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,  83.22) 04/18/2021   21:24:09  ( -81.41,  83.11)    1.98                63
 04/18/2021   22:14:39   (  81.41,-109.41) 04/18/2021   22:14:50  (  81.41,-109.56)    2.47                11
 04/21/2021   16:59:26   ( -81.42, 149.61) 04/21/2021   16:58:30  ( -81.41, 149.56)    1.23                56
 04/21/2021   17:48:53   (  81.40, -43.05) 04/21/2021   17:49:11  (  81.41, -43.15)    1.85                18
 04/24/2021   12:33:39   ( -81.41,-144.03) 04/24/2021   12:32:50  ( -81.41,-144.01)    0.75                49
 04/24/2021   13:23:06   (  81.40,  23.27) 04/24/2021   13:23:31  (  81.41,  23.24)    1.51                25
 04/27/2021   08:07:53   ( -81.41, -77.71) 04/27/2021   08:07:11  ( -81.41, -77.59)    2.00                42
 04/27/2021   08:57:19   (  81.41,  89.95) 04/27/2021   08:57:51  (  81.40,  90.01)    1.65                32
 04/30/2021   03:42:06   ( -81.42, -11.05) 04/30/2021   03:41:32  ( -81.40, -11.19)    2.99                34