Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NOAA-19
TLE Epoch: 2021 5 18.  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)
 05/18/2021   05:09:21   ( -80.35, -46.60) 05/18/2021   05:08:37  ( -80.37, -46.50)    2.54                44
 05/18/2021   05:58:47   (  80.36, 121.09) 05/18/2021   05:59:41  (  80.36, 120.92)    3.06                54
 05/20/2021   10:43:05   (  80.39,  50.29) 05/20/2021   10:41:52  (  80.37,  50.26)    2.04                73
 05/20/2021   11:32:33   ( -80.35,-142.38) 05/20/2021   11:32:47  ( -80.36,-142.32)    1.32                14
 05/22/2021   17:06:17   (  80.35, -45.83) 05/22/2021   17:06:02  (  80.38, -45.82)    2.50                15
 05/22/2021   17:55:44   ( -80.35, 121.83) 05/22/2021   17:56:56  ( -80.35, 121.86)    0.62                72
 05/24/2021   22:40:02   ( -80.38,  51.01) 05/24/2021   22:39:07  ( -80.37,  51.07)    1.52                55
 05/24/2021   23:29:29   (  80.35,-141.66) 05/24/2021   23:30:12  (  80.37,-141.58)    2.21                43
 05/27/2021   05:03:14   ( -80.38, -44.82) 05/27/2021   05:03:17  ( -80.37, -44.78)    1.55                 3
 05/29/2021   10:36:58   (  80.40,  51.94) 05/29/2021   10:36:33  (  80.37,  51.84)    3.20                25
 05/29/2021   11:26:26   ( -80.37,-140.68) 05/29/2021   11:27:27  ( -80.36,-140.63)    1.49                61
 05/31/2021   16:10:44   ( -80.39, 148.45) 05/31/2021   16:09:38  ( -80.38, 148.55)    2.21                66