Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NOAA-19
TLE Epoch: 2021 4 19.  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   07:06:49   ( -80.33, -76.59) 04/21/2021   07:06:28  ( -80.34, -76.53)    1.36                21
 04/21/2021   07:56:15   (  80.33,  91.06) 04/21/2021   07:57:25  (  80.32,  91.08)    1.83                70
 04/23/2021   12:40:31   (  80.34,  20.09) 04/23/2021   12:39:38  (  80.35,  20.04)    1.18                53
 04/23/2021   13:29:59   ( -80.31,-172.56) 04/23/2021   13:30:39  ( -80.33,-172.43)    3.28                40
 04/25/2021   19:03:40   (  80.35, -75.60) 04/25/2021   19:03:49  (  80.34, -75.72)    2.75                 9
 04/28/2021   00:37:24   ( -80.33,  20.77) 04/28/2021   00:37:02  ( -80.36,  20.72)    2.86                22
 04/28/2021   01:26:50   (  80.33,-171.63) 04/28/2021   01:28:00  (  80.33,-171.49)    2.55                70
 04/30/2021   06:11:05   (  80.37, 117.66) 04/30/2021   06:10:12  (  80.34, 117.75)    3.02                53
 04/30/2021   07:00:33   ( -80.34, -74.95) 04/30/2021   07:01:12  ( -80.34, -74.93)    0.44                39