Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 3 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)
 03/27/2025   06:45:25   ( -70.14,-105.04) 03/27/2025   06:45:55  ( -70.16,-105.02)    3.00                30
 03/27/2025   07:36:09   (  70.04,  62.42) 03/27/2025   07:35:22  (  70.06,  62.47)    3.06                47
 03/29/2025   22:11:39   (  70.49,-157.13) 03/29/2025   22:12:49  (  70.41,-156.42)   27.98                70
 03/29/2025   23:02:16   ( -70.12,  10.77) 03/29/2025   23:02:22  ( -70.13,  10.82)    2.58                 6
 03/29/2025   23:52:59   (  69.97, 178.30) 03/29/2025   23:51:50  (  69.97, 178.23)    2.69                69
 04/01/2025   14:28:25   (  70.18, -40.86) 04/01/2025   14:29:19  (  70.19, -40.85)    1.25                54
 04/01/2025   15:19:07   ( -70.06, 126.63) 04/01/2025   15:18:49  ( -70.08, 126.63)    2.07                18
 04/01/2025   16:09:36   (  69.18, -64.77) 04/01/2025   16:08:29  (  69.25, -66.86)   82.70                67
 04/04/2025   06:45:16   (  70.15,  74.96) 04/04/2025   06:45:44  (  70.17,  75.02)    2.92                28
 04/04/2025   07:35:58   ( -70.03,-117.54) 04/04/2025   07:35:15  ( -70.01,-117.58)    2.82                43
 04/06/2025   22:11:27   ( -70.43,  23.00) 04/06/2025   22:12:39  ( -70.36,  23.55)   21.92                72
 04/06/2025   23:02:06   (  70.10,-169.17) 04/06/2025   23:02:09  (  70.08,-169.22)    2.84                 3
 04/06/2025   23:52:48   ( -69.97,  -1.66) 04/06/2025   23:51:39  ( -69.97,  -1.73)    2.66                69