Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NOAA-19
TLE Epoch: 2021 5 4.  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)
 05/04/2021   18:07:57   ( -80.36, 118.31) 05/04/2021   18:07:34  ( -80.37, 118.20)    2.45                23
 05/04/2021   18:57:23   (  80.36, -74.02) 05/04/2021   18:58:34  (  80.34, -74.04)    2.30                71
 05/06/2021   23:41:39   (  80.36,-145.11) 05/06/2021   23:40:47  (  80.38,-145.21)    2.98                52
 05/07/2021   00:31:06   ( -80.36,  22.52) 05/07/2021   00:31:44  ( -80.35,  22.49)    0.73                38
 05/09/2021   06:04:48   (  80.35, 119.07) 05/09/2021   06:04:57  (  80.36, 119.23)    3.02                 9
 05/11/2021   11:38:31   ( -80.35,-144.39) 05/11/2021   11:38:06  ( -80.37,-144.29)    3.17                25
 05/11/2021   12:27:57   (  80.35,  23.23) 05/11/2021   12:29:08  (  80.35,  23.31)    1.55                71
 05/13/2021   17:12:12   (  80.38, -47.60) 05/13/2021   17:11:20  (  80.38, -47.60)    0.52                52
 05/13/2021   18:01:39   ( -80.38, 120.07) 05/13/2021   18:02:16  ( -80.36, 119.95)    2.90                37