Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NOAA-19
TLE Epoch: 2021 4 27.  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   00:37:23   ( -80.36,  21.03) 04/28/2021   00:37:01  ( -80.34,  21.03)    2.30                22
 04/28/2021   01:26:50   (  80.33,-171.61) 04/28/2021   01:28:00  (  80.33,-171.46)    2.84                70
 04/30/2021   06:11:06   (  80.34, 117.35) 04/30/2021   06:10:13  (  80.36, 117.44)    3.38                53
 04/30/2021   07:00:33   ( -80.34, -75.01) 04/30/2021   07:01:12  ( -80.34, -74.95)    1.28                39
 05/02/2021   12:34:15   (  80.34,  21.58) 05/02/2021   12:34:24  (  80.36,  21.61)    2.03                 9
 05/04/2021   18:07:57   ( -80.37, 118.47) 05/04/2021   18:07:34  ( -80.36, 118.38)    2.48                23
 05/04/2021   18:57:24   (  80.34, -74.22) 05/04/2021   18:58:35  (  80.35, -74.24)    1.39                71
 05/06/2021   23:41:39   (  80.37,-145.02) 05/06/2021   23:40:47  (  80.37,-145.09)    1.38                52
 05/07/2021   00:31:07   ( -80.34,  22.36) 05/07/2021   00:31:45  ( -80.36,  22.32)    2.73                38