Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 12 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)
 12/27/2023   07:34:47   ( -69.99,-117.66) 12/27/2023   07:35:52  ( -69.99,-117.60)    2.39                65
 12/27/2023   08:25:31   (  69.87,  49.83) 12/27/2023   08:25:20  (  69.84,  49.82)    3.52                11
 12/27/2023   09:16:06   ( -69.41,-142.19) 12/27/2023   09:14:54  ( -69.50,-143.00)   33.32                72
 12/29/2023   23:51:40   ( -69.95,  -1.83) 12/29/2023   23:52:20  ( -69.93,  -1.80)    1.99                40
 12/30/2023   00:42:24   (  69.83, 165.65) 12/30/2023   00:41:47  (  69.83, 165.69)    1.59                37
 01/01/2024   15:18:01   (  70.49, -54.21) 01/01/2024   15:19:11  (  70.38, -52.90)   49.92                70
 01/01/2024   16:08:33   ( -69.87, 114.07) 01/01/2024   16:08:48  ( -69.89, 114.02)    2.77                15
 01/01/2024   16:59:17   (  69.76, -78.45) 01/01/2024   16:58:15  (  69.78, -78.48)    3.05                62
 01/04/2024   07:34:45   (  69.95,  62.41) 01/04/2024   07:35:45  (  69.97,  62.40)    2.90                60
 01/04/2024   08:25:27   ( -69.86,-130.14) 01/04/2024   08:25:15  ( -69.87,-130.12)    1.35                12
 01/04/2024   09:16:01   (  69.21,  38.11) 01/04/2024   09:14:51  (  69.26,  36.70)   55.69                70
 01/06/2024   23:51:38   (  69.89, 178.27) 01/06/2024   23:52:12  (  69.91, 178.20)    3.15                34
 01/07/2024   00:42:20   ( -69.80, -14.28) 01/07/2024   00:41:42  ( -69.81, -14.31)    1.46                38