Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NOAA-19
TLE Epoch: 2021 4 11.  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   (  80.31,  89.33) 04/12/2021   08:02:39  (  80.32,  89.36)    1.11                 8
 04/14/2021   13:36:14   ( -80.33,-173.92) 04/14/2021   13:35:54  ( -80.31,-173.78)    3.11                20
 04/14/2021   14:25:41   (  80.30,  -6.58) 04/14/2021   14:26:51  (  80.32,  -6.66)    3.06                70
 04/16/2021   19:09:56   (  80.35, -77.18) 04/16/2021   19:09:03  (  80.33, -77.33)    3.24                53
 04/16/2021   19:59:24   ( -80.32,  90.18) 04/16/2021   20:00:06  ( -80.33,  90.05)    2.60                42
 04/19/2021   01:33:06   (  80.33,-173.13) 04/19/2021   01:33:14  (  80.32,-173.06)    1.88                 8
 04/21/2021   07:06:50   ( -80.32, -76.68) 04/21/2021   07:06:29  ( -80.34, -76.68)    2.59                21
 04/21/2021   07:56:16   (  80.32,  90.91) 04/21/2021   07:57:26  (  80.33,  90.88)    1.49                70
 04/23/2021   12:40:31   (  80.36,  20.26) 04/23/2021   12:39:38  (  80.34,  20.16)    2.70                53