Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 11 27.  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   23:51:33   ( -69.92,  -1.76) 11/27/2023   23:52:20  ( -69.94,  -1.79)    2.51                47
 11/28/2023   00:42:17   (  69.81, 165.71) 11/28/2023   00:41:47  (  69.84, 165.72)    3.37                30
 11/30/2023   15:18:01   (  70.70, -54.54) 11/30/2023   15:19:09  (  70.60, -52.58)   73.10                68
 11/30/2023   16:08:29   ( -69.86, 114.08) 11/30/2023   16:08:50  ( -69.89, 114.02)    3.48                21
 11/30/2023   16:59:13   (  69.76, -78.45) 11/30/2023   16:58:17  (  69.78, -78.48)    3.08                56
 12/03/2023   07:34:44   (  69.98,  62.36) 12/03/2023   07:35:49  (  69.95,  62.36)    2.95                65
 12/03/2023   08:25:26   ( -69.87,-130.17) 12/03/2023   08:25:19  ( -69.84,-130.16)    3.54                 7
 12/03/2023   09:16:03   (  69.40,  37.84) 12/03/2023   09:14:51  (  69.46,  36.96)   35.10                72
 12/05/2023   23:51:38   (  69.90, 178.25) 12/05/2023   23:52:16  (  69.92, 178.20)    3.01                38
 12/06/2023   00:42:20   ( -69.79, -14.28) 12/06/2023   00:41:46  ( -69.81, -14.31)    2.58                34
 12/08/2023   15:18:00   ( -70.51, 125.76) 12/08/2023   15:19:09  ( -70.39, 127.13)   52.31                69
 12/08/2023   16:08:34   (  69.88, -65.96) 12/08/2023   16:08:43  (  69.89, -65.94)    1.56                 9
 12/08/2023   16:59:16   ( -69.77, 101.52) 12/08/2023   16:58:13  ( -69.79, 101.55)    2.11                63