Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NOAA-19
TLE Epoch: 2021 4 10.  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   (  80.30,  89.25) 04/12/2021   08:02:39  (  80.32,  89.27)    2.52                 8
 04/14/2021   13:36:14   ( -80.32,-173.99) 04/14/2021   13:35:54  ( -80.32,-173.87)    2.34                20
 04/14/2021   14:25:40   (  80.32,  -6.35) 04/14/2021   14:26:50  (  80.31,  -6.42)    2.01                70
 04/16/2021   19:09:56   (  80.34, -77.26) 04/16/2021   19:09:03  (  80.34, -77.43)    3.09                53
 04/16/2021   19:59:24   ( -80.31,  90.11) 04/16/2021   20:00:05  ( -80.31,  90.29)    3.49                41
 04/19/2021   01:33:06   (  80.32,-173.20) 04/19/2021   01:33:14  (  80.33,-173.15)    1.02                 8
 04/21/2021   07:06:49   ( -80.35, -76.44) 04/21/2021   07:06:28  ( -80.33, -76.43)    1.76                21
 04/21/2021   07:56:16   (  80.31,  90.84) 04/21/2021   07:57:26  (  80.33,  90.78)    3.00                70
 04/23/2021   12:40:31   (  80.35,  20.19) 04/23/2021   12:39:38  (  80.35,  20.06)    2.42                53