Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 6 25.  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)
 06/25/2025   22:11:52   ( -70.12,  23.32) 06/25/2025   22:12:46  ( -70.13,  23.26)    2.98                54
 06/25/2025   23:02:37   (  70.02,-169.23) 06/25/2025   23:02:13  (  70.03,-169.24)    1.27                24
 06/25/2025   23:53:04   ( -69.17,  -0.67) 06/25/2025   23:51:56  ( -69.21,  -2.74)   81.85                68
 06/28/2025   14:28:48   ( -70.09, 139.13) 06/28/2025   14:29:17  ( -70.09, 139.07)    2.35                29
 06/28/2025   15:19:33   (  70.00, -53.43) 06/28/2025   15:18:44  (  69.98, -53.43)    1.56                49
 07/01/2025   05:55:04   (  70.29,  87.27) 07/01/2025   05:56:15  (  70.24,  87.54)   11.42                71
 07/01/2025   06:45:43   ( -70.06,-105.06) 07/01/2025   06:45:46  ( -70.08,-105.06)    2.89                 3
 07/01/2025   07:36:27   (  69.92,  62.45) 07/01/2025   07:35:14  (  69.92,  62.36)    3.71                73
 07/03/2025   22:11:57   (  70.11,-156.69) 07/03/2025   22:12:47  (  70.11,-156.77)    2.91                50
 07/03/2025   23:02:39   ( -70.03,  10.75) 07/03/2025   23:02:17  ( -70.01,  10.72)    2.67                22
 07/06/2025   14:28:53   (  70.09, -40.90) 07/06/2025   14:29:17  (  70.07, -40.94)    2.61                24
 07/06/2025   15:19:35   ( -70.01, 126.55) 07/06/2025   15:18:47  ( -69.97, 126.55)    3.60                48