Simultaneous Nadir Overpasses (SNOs) between METOP-C and LANDSAT-8
TLE Epoch: 2021 4 20.  Predictions up to the next  14.0 days:

     Date     Time(METOP-C) METOP-C Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 04/20/2021   22:01:48   (  81.08,-111.79) 04/20/2021   22:02:31  (  81.08,-111.93)    2.44                43
 04/20/2021   22:52:27   ( -81.09,  55.90) 04/20/2021   22:51:57  ( -81.10,  56.01)    1.89                30
 04/23/2021   17:36:11   (  81.07, -45.64) 04/23/2021   17:36:45  (  81.07, -45.60)    0.60                34
 04/23/2021   18:26:49   ( -81.10, 122.45) 04/23/2021   18:26:11  ( -81.09, 122.36)    1.79                38
 04/26/2021   13:10:33   (  81.08,  20.87) 04/26/2021   13:10:58  (  81.09,  21.04)    3.25                25
 04/26/2021   14:01:11   ( -81.11,-171.01) 04/26/2021   14:00:24  ( -81.11,-170.96)    0.85                47
 04/29/2021   08:44:54   (  81.08,  87.35) 04/29/2021   08:45:11  (  81.07,  87.29)    1.18                17
 04/29/2021   09:35:33   ( -81.10,-104.86) 04/29/2021   09:34:37  ( -81.10,-104.69)    2.90                56
 05/02/2021   04:19:16   (  81.08, 153.81) 05/02/2021   04:19:24  (  81.08, 153.87)    0.94                 8