Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NOAA-19
TLE Epoch: 2021 4 12.  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)
 04/12/2021   08:02:31   (  80.32,  89.40) 04/12/2021   08:02:39  (  80.31,  89.44)    0.85                 8
 04/14/2021   13:36:15   ( -80.31,-174.16) 04/14/2021   13:35:55  ( -80.33,-174.04)    3.42                20
 04/14/2021   14:25:41   (  80.31,  -6.51) 04/14/2021   14:26:51  (  80.32,  -6.58)    1.85                70
 04/16/2021   19:09:57   (  80.32, -77.42) 04/16/2021   19:09:03  (  80.33, -77.24)    3.29                54
 04/16/2021   19:59:24   ( -80.33,  90.24) 04/16/2021   20:00:06  ( -80.32,  90.13)    2.16                42
 04/19/2021   01:33:07   (  80.31,-173.36) 04/19/2021   01:33:15  (  80.33,-173.28)    3.12                 8
 04/21/2021   07:06:50   ( -80.33, -76.61) 04/21/2021   07:06:29  ( -80.34, -76.56)    1.32                21
 04/21/2021   07:56:15   (  80.32,  90.99) 04/21/2021   07:57:25  (  80.32,  91.00)    0.49                70
 04/23/2021   12:40:31   (  80.34,  20.03) 04/23/2021   12:39:38  (  80.35,  19.97)    2.12                53
 04/23/2021   13:29:59   ( -80.31,-172.57) 04/23/2021   13:30:39  ( -80.33,-172.46)    3.25                40