Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 11 26.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-9) LANDSAT-9 Lat/Lon    Distance(km)  Time Diff(sec)
 11/27/2023   23:51:34   ( -69.95,  -1.81) 11/27/2023   23:52:20  ( -69.94,  -1.78)    1.09                46
 11/28/2023   00:42:18   (  69.84, 165.67) 11/28/2023   00:41:47  (  69.84, 165.72)    1.96                31
 11/30/2023   15:18:00   (  70.69, -54.52) 11/30/2023   15:19:08  (  70.55, -52.65)   70.73                68
 11/30/2023   16:08:29   ( -69.90, 114.03) 11/30/2023   16:08:48  ( -69.89, 114.04)    1.01                19
 11/30/2023   16:59:13   (  69.80, -78.50) 11/30/2023   16:58:15  (  69.79, -78.47)    1.67                58
 12/03/2023   07:34:43   (  69.98,  62.36) 12/03/2023   07:35:45  (  70.00,  62.44)    3.46                62
 12/03/2023   08:25:24   ( -69.82,-130.08) 12/03/2023   08:25:16  ( -69.83,-130.16)    3.14                 8
 12/03/2023   09:16:00   (  69.29,  37.99) 12/03/2023   09:14:50  (  69.33,  36.81)   46.77                70
 12/05/2023   23:51:38   (  69.91, 178.23) 12/05/2023   23:52:12  (  69.92, 178.23)    1.11                34
 12/06/2023   00:42:20   ( -69.81, -14.30) 12/06/2023   00:41:42  ( -69.82, -14.28)    1.23                38
 12/08/2023   15:17:55   ( -70.28, 126.12) 12/08/2023   15:19:07  ( -70.18, 126.85)   29.64                72
 12/08/2023   16:08:33   (  69.87, -65.94) 12/08/2023   16:08:37  (  69.90, -65.91)    3.42                 4
 12/08/2023   16:59:15   ( -69.76, 101.54) 12/08/2023   16:58:08  ( -69.74, 101.51)    2.87                67