Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and METOP-A
TLE Epoch: 2021 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)
 04/21/2021   16:59:25   ( -81.42, 149.71) 04/21/2021   16:58:31  ( -81.41, 149.52)    3.35                54
 04/21/2021   17:48:52   (  81.41, -42.93) 04/21/2021   17:49:11  (  81.40, -42.77)    2.82                19
 04/24/2021   12:33:39   ( -81.42,-143.96) 04/24/2021   12:32:53  ( -81.41,-143.90)    1.72                46
 04/24/2021   13:23:06   (  81.40,  23.38) 04/24/2021   13:23:34  (  81.41,  23.38)    0.42                28
 04/27/2021   08:07:53   ( -81.41, -77.66) 04/27/2021   08:07:16  ( -81.41, -77.74)    1.25                37
 04/27/2021   08:57:19   (  81.41,  90.03) 04/27/2021   08:57:56  (  81.40,  89.90)    2.60                37
 04/30/2021   03:42:06   ( -81.40, -11.41) 04/30/2021   03:41:37  ( -81.41, -11.22)    3.23                29
 04/30/2021   04:31:32   (  81.40, 156.25) 04/30/2021   04:32:17  (  81.40, 156.38)    2.16                45
 05/02/2021   23:16:19   ( -81.41,  55.18) 05/02/2021   23:15:59  ( -81.40,  55.27)    1.74                20