Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NOAA-19
TLE Epoch: 2021 4 17.  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)
 04/19/2021   01:33:06   (  80.32,-173.22) 04/19/2021   01:33:14  (  80.33,-173.15)    1.47                 8
 04/21/2021   07:06:49   ( -80.34, -76.51) 04/21/2021   07:06:28  ( -80.33, -76.46)    1.25                21
 04/21/2021   07:56:15   (  80.34,  91.12) 04/21/2021   07:57:25  (  80.31,  91.13)    2.86                70
 04/23/2021   12:40:31   (  80.35,  20.16) 04/23/2021   12:39:38  (  80.35,  20.10)    1.35                53
 04/23/2021   13:29:59   ( -80.32,-172.47) 04/23/2021   13:30:39  ( -80.33,-172.36)    2.21                40
 04/25/2021   19:03:41   (  80.33, -75.83) 04/25/2021   19:03:49  (  80.33, -75.65)    3.40                 8
 04/28/2021   00:37:24   ( -80.34,  20.88) 04/28/2021   00:37:02  ( -80.35,  20.81)    1.54                22
 04/28/2021   01:26:50   (  80.34,-171.53) 04/28/2021   01:28:00  (  80.32,-171.41)    2.92                70
 04/30/2021   06:11:06   (  80.35, 117.46) 04/30/2021   06:10:13  (  80.36, 117.51)    1.62                53