Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 5 12.  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)
 05/14/2025   05:54:45   (  71.16,  86.00) 05/14/2025   05:55:51  (  71.04,  88.63)   95.64                66
 05/14/2025   06:45:10   ( -70.18,-105.09) 05/14/2025   06:45:35  ( -70.16,-105.06)    2.85                25
 05/14/2025   07:35:54   (  70.06,  62.40) 05/14/2025   07:35:02  (  70.05,  62.44)    1.36                52
 05/16/2025   22:11:25   (  70.21,-156.70) 05/16/2025   22:12:32  (  70.20,-156.75)    2.61                67
 05/16/2025   23:02:07   ( -70.12,  10.76) 05/16/2025   23:02:01  ( -70.14,  10.80)    2.06                 6
 05/16/2025   23:52:45   (  69.68, 178.72) 05/16/2025   23:51:33  (  69.75, 177.91)   32.51                72
 05/19/2025   14:28:22   (  70.16, -40.86) 05/19/2025   14:28:58  (  70.15, -40.93)    2.98                36
 05/19/2025   15:19:04   ( -70.07, 126.59) 05/19/2025   15:18:27  ( -70.09, 126.62)    2.36                37
 05/22/2025   05:54:41   ( -70.55, -93.02) 05/22/2025   05:55:52  ( -70.46, -92.23)   30.94                71
 05/22/2025   06:45:19   (  70.11,  74.97) 05/22/2025   06:45:23  (  70.13,  74.94)    2.62                 4
 05/22/2025   07:36:01   ( -70.03,-117.58) 05/22/2025   07:34:53  ( -70.02,-117.59)    0.69                68
 05/24/2025   22:11:31   ( -70.19,  23.30) 05/24/2025   22:12:20  ( -70.20,  23.29)    0.93                49
 05/24/2025   23:02:15   (  70.07,-169.20) 05/24/2025   23:01:47  (  70.09,-169.23)    2.27                28