Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NOAA-19
TLE Epoch: 2021 12 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)
 12/19/2021   18:27:10   ( -80.63, 116.75) 12/19/2021   18:26:15  ( -80.64, 116.85)    2.06                55
 12/19/2021   19:16:36   (  80.63, -75.57) 12/19/2021   19:17:09  (  80.62, -75.42)    2.99                33
 12/22/2021   00:50:20   ( -80.63,  20.96) 12/22/2021   00:50:19  ( -80.64,  20.85)    2.39                 1
 12/24/2021   06:24:02   (  80.65, 117.81) 12/24/2021   06:23:18  (  80.64, 117.84)    2.00                44
 12/24/2021   07:13:30   ( -80.63, -74.87) 12/24/2021   07:14:22  ( -80.63, -74.82)    1.13                52
 12/26/2021   12:47:12   (  80.65,  21.93) 12/26/2021   12:47:22  (  80.64,  21.89)    1.25                10
 12/28/2021   18:20:56   ( -80.64, 118.41) 12/28/2021   18:20:30  ( -80.65, 118.45)    1.09                26
 12/28/2021   19:10:22   (  80.64, -73.97) 12/28/2021   19:11:26  (  80.64, -74.07)    1.72                64
 12/30/2021   23:54:38   (  80.65,-144.87) 12/30/2021   23:53:31  (  80.66,-144.96)    1.60                67