Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NOAA-19
TLE Epoch: 2021 7 15.  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)
 07/15/2021   14:01:05   ( -80.45,-178.52) 07/15/2021   14:00:48  ( -80.44,-178.54)    1.02                17
 07/15/2021   14:50:32   (  80.42, -11.13) 07/15/2021   14:51:45  (  80.43, -11.14)    1.05                73
 07/17/2021   19:34:49   (  80.44, -82.06) 07/17/2021   19:33:54  (  80.45, -81.94)    2.60                55
 07/17/2021   20:24:16   ( -80.44,  85.56) 07/17/2021   20:24:57  ( -80.44,  85.45)    2.21                41
 07/20/2021   01:57:59   (  80.45,-177.70) 07/20/2021   01:58:02  (  80.45,-177.80)    2.02                 3
 07/22/2021   07:31:44   ( -80.43, -81.31) 07/22/2021   07:31:15  ( -80.46, -81.26)    2.78                29
 07/22/2021   08:21:10   (  80.43,  86.33) 07/22/2021   08:22:10  (  80.44,  86.33)    0.84                60
 07/24/2021   13:05:27   (  80.44,  15.36) 07/24/2021   13:04:19  (  80.46,  15.51)    3.33                68
 07/24/2021   13:54:54   ( -80.45,-176.96) 07/24/2021   13:55:23  ( -80.45,-177.01)    0.89                29
 07/26/2021   19:28:37   (  80.45, -80.33) 07/26/2021   19:28:27  (  80.46, -80.38)    1.05                10
 07/29/2021   01:02:21   ( -80.47,  16.39) 07/29/2021   01:01:40  ( -80.45,  16.46)    2.04                41