Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 6 9.  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)
 06/09/2025   22:11:43   ( -70.13,  23.34) 06/09/2025   22:12:34  ( -70.15,  23.29)    2.91                51
 06/09/2025   23:02:28   (  70.03,-169.20) 06/09/2025   23:02:01  (  70.05,-169.20)    2.91                27
 06/09/2025   23:52:53   ( -69.07,  -0.49) 06/09/2025   23:51:46  ( -69.11,  -2.84)   93.30                67
 06/12/2025   13:38:15   (  71.13, -29.84) 06/12/2025   13:39:21  (  71.03, -27.15)   97.55                66
 06/12/2025   14:28:39   ( -70.13, 139.11) 06/12/2025   14:29:06  ( -70.10, 139.09)    3.45                27
 06/12/2025   15:19:23   (  69.98, -53.36) 06/12/2025   15:18:33  (  70.00, -53.41)    3.09                50
 06/15/2025   05:54:56   (  70.29,  87.29) 06/15/2025   05:56:07  (  70.24,  87.54)   10.82                71
 06/15/2025   06:45:35   ( -70.07,-105.05) 06/15/2025   06:45:38  ( -70.08,-105.06)    0.77                 3
 06/15/2025   07:36:19   (  69.93,  62.48) 06/15/2025   07:35:06  (  69.92,  62.36)    4.68                73
 06/17/2025   22:11:50   (  70.14,-156.71) 06/17/2025   22:12:40  (  70.15,-156.72)    0.99                50
 06/17/2025   23:02:31   ( -70.03,  10.79) 06/17/2025   23:02:10  ( -70.05,  10.77)    2.46                21
 06/17/2025   23:52:59   (  69.03, 179.54) 06/17/2025   23:51:53  (  69.05, 177.07)   98.13                66
 06/20/2025   14:28:46   (  70.10, -40.88) 06/20/2025   14:29:12  (  70.10, -40.92)    1.30                26
 06/20/2025   15:19:27   ( -69.98, 126.62) 06/20/2025   15:18:42  ( -70.00, 126.57)    2.44                45
 06/23/2025   05:55:01   ( -70.41, -92.91) 06/23/2025   05:56:13  ( -70.31, -92.38)   22.75                72
 06/23/2025   06:45:41   (  70.07,  74.94) 06/23/2025   06:45:42  (  70.08,  74.94)    1.84                 1
 06/23/2025   07:36:23   ( -69.99,-117.64) 06/23/2025   07:35:12  ( -69.98,-117.57)    2.80                71