Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NOAA-19
TLE Epoch: 2021 4 7.  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   ( -80.33,  88.74) 04/07/2021   20:05:20  ( -80.31,  88.58)    3.37                18
 04/07/2021   20:55:05   (  80.30,-103.90) 04/07/2021   20:56:15  (  80.30,-103.96)    1.16                70
 04/10/2021   01:39:21   (  80.32,-174.76) 04/10/2021   01:38:27  (  80.31,-174.59)    3.26                54
 04/10/2021   02:28:48   ( -80.32,  -7.11) 04/10/2021   02:29:31  ( -80.30,  -7.17)    2.54                43
 04/12/2021   08:02:31   (  80.31,  89.35) 04/12/2021   08:02:39  (  80.32,  89.40)    0.97                 8
 04/14/2021   13:36:14   ( -80.34,-173.86) 04/14/2021   13:35:55  ( -80.33,-174.04)    3.54                19
 04/14/2021   14:25:41   (  80.30,  -6.55) 04/14/2021   14:26:51  (  80.32,  -6.61)    2.34                70
 04/16/2021   19:09:56   (  80.35, -77.15) 04/16/2021   19:09:03  (  80.33, -77.27)    3.14                53
 04/16/2021   19:59:24   ( -80.32,  90.24) 04/16/2021   20:00:06  ( -80.32,  90.14)    1.92                42