Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NOAA-19
TLE Epoch: 2021 4 14.  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)
 04/14/2021   13:36:14   ( -80.33,-173.96) 04/14/2021   13:35:54  ( -80.32,-173.82)    2.77                20
 04/14/2021   14:25:40   (  80.33,  -6.29) 04/14/2021   14:26:50  (  80.30,  -6.35)    3.07                70
 04/16/2021   19:09:56   (  80.35, -77.20) 04/16/2021   19:09:03  (  80.34, -77.34)    3.01                53
 04/16/2021   19:59:24   ( -80.32,  90.14) 04/16/2021   20:00:06  ( -80.33,  90.02)    2.61                42
 04/19/2021   01:33:06   (  80.33,-173.14) 04/19/2021   01:33:14  (  80.32,-173.03)    2.36                 8
 04/21/2021   07:06:50   ( -80.32, -76.71) 04/21/2021   07:06:29  ( -80.34, -76.64)    2.99                21
 04/21/2021   07:56:16   (  80.32,  90.90) 04/21/2021   07:57:26  (  80.32,  90.93)    1.18                70
 04/23/2021   12:40:31   (  80.36,  20.25) 04/23/2021   12:39:38  (  80.34,  20.26)    2.51                53
 04/23/2021   13:29:59   ( -80.33,-172.36) 04/23/2021   13:30:40  ( -80.34,-172.52)    2.96                41
 04/25/2021   19:03:41   (  80.34, -75.75) 04/25/2021   19:03:50  (  80.34, -75.79)    0.97                 9
 04/28/2021   00:37:24   ( -80.36,  20.98) 04/28/2021   00:37:02  ( -80.34,  21.05)    2.31                22