Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NOAA-19
TLE Epoch: 2021 4 22.  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)
 04/23/2021   12:40:31   (  80.34,  20.04) 04/23/2021   12:39:38  (  80.35,  19.99)    1.80                53
 04/23/2021   13:29:58   ( -80.34,-172.33) 04/23/2021   13:30:39  ( -80.34,-172.50)    3.23                41
 04/25/2021   19:03:40   (  80.35, -75.66) 04/25/2021   19:03:49  (  80.34, -75.76)    2.03                 9
 04/28/2021   00:37:23   ( -80.36,  20.99) 04/28/2021   00:37:01  ( -80.34,  21.00)    1.61                22
 04/28/2021   01:26:50   (  80.32,-171.69) 04/28/2021   01:28:00  (  80.33,-171.53)    3.14                70
 04/30/2021   06:11:05   (  80.36, 117.58) 04/30/2021   06:10:12  (  80.35, 117.72)    2.96                53
 04/30/2021   07:00:33   ( -80.33, -75.04) 04/30/2021   07:01:12  ( -80.34, -74.97)    1.83                39
 05/02/2021   12:34:15   (  80.33,  21.51) 05/02/2021   12:34:24  (  80.36,  21.58)    3.14                 9
 05/04/2021   18:07:57   ( -80.37, 118.46) 05/04/2021   18:07:34  ( -80.36, 118.40)    1.96                23