Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NOAA-19
TLE Epoch: 2021 4 20.  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)
 04/21/2021   07:06:50   ( -80.32, -76.72) 04/21/2021   07:06:29  ( -80.34, -76.66)    3.17                21
 04/21/2021   07:56:16   (  80.32,  90.94) 04/21/2021   07:57:26  (  80.32,  90.95)    0.50                70
 04/23/2021   12:40:31   (  80.36,  20.28) 04/23/2021   12:39:38  (  80.34,  20.25)    2.80                53
 04/23/2021   13:29:59   ( -80.33,-172.39) 04/23/2021   13:30:39  ( -80.32,-172.23)    3.01                40
 04/25/2021   19:03:41   (  80.34, -75.74) 04/25/2021   19:03:50  (  80.35, -75.85)    2.11                 9
 04/28/2021   00:37:24   ( -80.35,  20.93) 04/28/2021   00:37:02  ( -80.35,  20.91)    0.41                22
 04/28/2021   01:26:50   (  80.35,-171.46) 04/28/2021   01:28:01  (  80.34,-171.62)    3.26                71
 04/30/2021   06:11:05   (  80.35, 117.50) 04/30/2021   06:10:12  (  80.35, 117.61)    2.11                53
 04/30/2021   07:00:33   ( -80.32, -75.11) 04/30/2021   07:01:12  ( -80.35, -75.07)    2.79                39