Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 5 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)
 05/30/2025   05:54:46   (  70.38,  87.21) 05/30/2025   05:55:58  (  70.31,  87.51)   13.69                72
 05/30/2025   06:45:25   ( -70.15,-105.12) 05/30/2025   06:45:29  ( -70.13,-105.11)    2.49                 4
 05/30/2025   07:36:09   (  70.01,  62.41) 05/30/2025   07:34:56  (  70.03,  62.40)    2.54                73
 06/01/2025   22:11:40   (  70.19,-156.74) 06/01/2025   22:12:27  (  70.21,-156.75)    2.11                47
 06/01/2025   23:02:21   ( -70.07,  10.77) 06/01/2025   23:01:57  ( -70.09,  10.72)    2.94                24
 06/04/2025   13:38:08   ( -71.09, 150.26) 06/04/2025   13:39:15  ( -70.96, 152.62)   86.57                67
 06/04/2025   14:28:37   (  70.17, -40.94) 06/04/2025   14:28:55  (  70.15, -40.95)    1.96                18
 06/04/2025   15:19:18   ( -70.05, 126.56) 06/04/2025   15:18:25  ( -70.04, 126.52)    1.89                53
 06/07/2025   05:54:49   ( -70.24, -92.59) 06/07/2025   05:55:55  ( -70.24, -92.59)    0.06                66
 06/07/2025   06:45:33   (  70.15,  74.85) 06/07/2025   06:45:21  (  70.13,  74.90)    2.99                12
 06/07/2025   07:36:08   ( -69.71,-117.17) 06/07/2025   07:34:56  ( -69.74,-118.00)   32.30                72
 06/09/2025   22:11:45   ( -70.22,  23.20) 06/09/2025   22:12:21  ( -70.20,  23.24)    2.85                36
 06/09/2025   23:02:29   (  70.08,-169.28) 06/09/2025   23:01:48  (  70.09,-169.27)    0.62                41