Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NOAA-19
TLE Epoch: 2021 4 26.  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)
 04/28/2021   00:37:24   ( -80.35,  20.89) 04/28/2021   00:37:02  ( -80.35,  20.88)    0.37                22
 04/28/2021   01:26:51   (  80.32,-171.76) 04/28/2021   01:28:01  (  80.34,-171.62)    3.30                70
 04/30/2021   06:11:05   (  80.35, 117.51) 04/30/2021   06:10:12  (  80.35, 117.61)    1.84                53
 04/30/2021   07:00:32   ( -80.35, -74.84) 04/30/2021   07:01:11  ( -80.33, -74.78)    2.63                39
 05/02/2021   12:34:14   (  80.35,  21.73) 05/02/2021   12:34:23  (  80.35,  21.78)    1.28                 9
 05/04/2021   18:07:57   ( -80.36, 118.32) 05/04/2021   18:07:34  ( -80.37, 118.21)    2.27                23
 05/04/2021   18:57:23   (  80.35, -74.07) 05/04/2021   18:58:34  (  80.34, -74.08)    1.55                71
 05/06/2021   23:41:38   (  80.38,-144.87) 05/06/2021   23:40:46  (  80.36,-144.92)    2.51                52
 05/07/2021   00:31:06   ( -80.36,  22.52) 05/07/2021   00:31:44  ( -80.35,  22.49)    0.57                38