Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NOAA-19
TLE Epoch: 2021 4 9.  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)
 04/10/2021   01:39:20   (  80.34,-174.62) 04/10/2021   01:38:27  (  80.32,-174.78)    3.28                53
 04/10/2021   02:28:48   ( -80.30,  -7.30) 04/10/2021   02:29:31  ( -80.31,  -7.37)    1.84                43
 04/12/2021   08:02:30   (  80.33,  89.49) 04/12/2021   08:02:38  (  80.31,  89.53)    2.23                 8
 04/14/2021   13:36:14   ( -80.32,-174.05) 04/14/2021   13:35:54  ( -80.32,-173.94)    2.17                20
 04/14/2021   14:25:40   (  80.32,  -6.42) 04/14/2021   14:26:50  (  80.31,  -6.49)    1.47                70
 04/16/2021   19:09:56   (  80.33, -77.33) 04/16/2021   19:09:02  (  80.33, -77.17)    3.07                54
 04/16/2021   19:59:23   ( -80.34,  90.35) 04/16/2021   20:00:05  ( -80.32,  90.22)    3.45                42
 04/19/2021   01:33:06   (  80.32,-173.27) 04/19/2021   01:33:14  (  80.33,-173.23)    1.64                 8
 04/21/2021   07:06:49   ( -80.34, -76.50) 04/21/2021   07:06:28  ( -80.33, -76.50)    0.65                21