Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 7 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)
 07/06/2025   14:28:53   (  70.12, -40.94) 07/06/2025   14:29:16  (  70.09, -40.90)    3.27                23
 07/06/2025   15:19:34   ( -69.99, 126.57) 07/06/2025   15:18:46  ( -69.98, 126.57)    0.92                48
 07/09/2025   05:55:06   ( -70.29, -92.74) 07/09/2025   05:56:17  ( -70.25, -92.43)   12.15                71
 07/09/2025   06:45:48   (  70.06,  74.92) 07/09/2025   06:45:46  (  70.04,  74.90)    2.64                 2
 07/09/2025   07:36:29   ( -69.92,-117.56) 07/09/2025   07:35:16  ( -69.93,-117.62)    2.41                73
 07/11/2025   22:11:59   ( -70.12,  23.29) 07/11/2025   22:12:48  ( -70.13,  23.27)    1.43                49
 07/11/2025   23:02:43   (  70.00,-169.23) 07/11/2025   23:02:15  (  70.02,-169.24)    1.89                28
 07/14/2025   13:38:28   (  70.99, -29.67) 07/14/2025   13:39:34  (  70.91, -27.31)   86.35                66
 07/14/2025   14:28:55   ( -70.11, 139.07) 07/14/2025   14:29:17  ( -70.10, 139.11)    2.16                22
 07/14/2025   15:19:39   (  70.00, -53.46) 07/14/2025   15:18:44  (  69.98, -53.40)    2.81                55
 07/17/2025   05:55:07   (  70.16,  87.44) 07/17/2025   05:56:15  (  70.15,  87.44)    0.84                68
 07/17/2025   06:45:49   ( -70.05,-105.08) 07/17/2025   06:45:45  ( -70.05,-105.06)    0.55                 4
 07/17/2025   07:36:28   (  69.68,  62.78) 07/17/2025   07:35:16  (  69.71,  62.11)   26.14                72