Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NOAA-19
TLE Epoch: 2021 4 6.  Predictions up to the next  14.0 days:

     Date     Time(LANDSAT-8) LANDSAT-8 Lat/Lon Date Time(NOAA-19) NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 04/07/2021   20:05:38   ( -80.32,  88.68) 04/07/2021   20:05:20  ( -80.32,  88.52)    3.12                18
 04/07/2021   20:55:05   (  80.29,-103.96) 04/07/2021   20:56:15  (  80.31,-104.02)    1.97                70
 04/10/2021   01:39:21   (  80.32,-174.82) 04/10/2021   01:38:27  (  80.32,-174.65)    3.12                54
 04/10/2021   02:28:48   ( -80.32,  -7.17) 04/10/2021   02:29:31  ( -80.31,  -7.23)    1.70                43
 04/12/2021   08:02:31   (  80.31,  89.29) 04/12/2021   08:02:39  (  80.32,  89.34)    1.80                 8
 04/14/2021   13:36:14   ( -80.33,-173.91) 04/14/2021   13:35:55  ( -80.33,-174.09)    3.31                19
 04/14/2021   14:25:40   (  80.33,  -6.31) 04/14/2021   14:26:50  (  80.30,  -6.33)    2.73                70
 04/16/2021   19:09:56   (  80.34, -77.21) 04/16/2021   19:09:03  (  80.33, -77.31)    2.31                53
 04/16/2021   19:59:24   ( -80.32,  90.19) 04/16/2021   20:00:06  ( -80.32,  90.10)    1.70                42