Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 6 4.  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)
 06/04/2025   14:28:35   (  70.11, -40.84) 06/04/2025   14:28:57  (  70.12, -40.86)    1.61                22
 06/04/2025   15:19:16   ( -70.00, 126.65) 06/04/2025   15:18:27  ( -70.00, 126.61)    1.56                49
 06/07/2025   05:54:47   ( -70.20, -92.53) 06/07/2025   05:55:58  ( -70.20, -92.50)    0.97                71
 06/07/2025   06:45:32   (  70.10,  74.93) 06/07/2025   06:45:25  (  70.10,  75.00)    2.87                 7
 06/07/2025   07:36:10   ( -69.83,-117.34) 06/07/2025   07:34:57  ( -69.87,-117.68)   13.80                73
 06/09/2025   22:11:43   ( -70.14,  23.32) 06/09/2025   22:12:26  ( -70.16,  23.33)    1.48                43
 06/09/2025   23:02:28   (  70.05,-169.23) 06/09/2025   23:01:53  (  70.05,-169.17)    2.42                35
 06/12/2025   13:38:07   (  70.69, -29.10) 06/12/2025   13:39:17  (  70.59, -27.77)   50.43                70
 06/12/2025   14:28:39   ( -70.10, 139.15) 06/12/2025   14:28:54  ( -70.09, 139.14)    0.87                15
 06/12/2025   15:19:24   (  70.01, -53.41) 06/12/2025   15:18:21  (  69.98, -53.37)    3.03                63
 06/15/2025   05:54:53   (  70.18,  87.47) 06/15/2025   05:55:50  (  70.17,  87.51)    2.28                57
 06/15/2025   06:45:34   ( -70.06,-105.03) 06/15/2025   06:45:20  ( -70.06,-105.01)    0.77                14
 06/15/2025   07:36:06   (  69.28,  63.42) 06/15/2025   07:34:58  (  69.34,  61.65)   69.86                68
 06/17/2025   22:11:48   (  70.11,-156.65) 06/17/2025   22:12:17  (  70.11,-156.67)    1.29                29
 06/17/2025   23:02:30   ( -70.03,  10.78) 06/17/2025   23:01:47  ( -70.01,  10.81)    3.08                43