Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 11 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)
 11/06/2025   07:35:21   (  70.06,  62.54) 11/06/2025   07:35:51  (  70.05,  62.51)    1.74                30
 11/06/2025   08:26:02   ( -69.94,-129.96) 11/06/2025   08:25:21  ( -69.94,-130.01)    1.98                41
 11/08/2025   23:01:37   ( -70.72,   9.99) 11/08/2025   23:02:46  ( -70.63,  11.58)   59.23                69
 11/08/2025   23:52:10   (  70.02, 178.41) 11/08/2025   23:52:22  (  70.03, 178.35)    2.46                12
 11/09/2025   00:42:52   ( -69.94, -14.16) 11/09/2025   00:41:52  ( -69.92, -14.16)    2.17                60
 11/11/2025   15:18:15   ( -70.15, 126.69) 11/11/2025   15:19:24  ( -70.14, 126.75)    2.02                69
 11/11/2025   16:08:59   (  70.03, -65.82) 11/11/2025   16:08:51  (  70.03, -65.77)    1.95                 8
 11/11/2025   16:59:37   ( -69.74, 101.94) 11/11/2025   16:58:24  ( -69.77, 101.49)   17.35                73
 11/14/2025   07:35:04   ( -70.11,-117.45) 11/14/2025   07:35:54  ( -70.13,-117.40)    2.57                50
 11/14/2025   08:25:48   (  70.00,  50.03) 11/14/2025   08:25:21  (  70.01,  50.08)    2.39                27
 11/14/2025   09:16:13   ( -69.01,-141.23) 11/14/2025   09:15:06  ( -69.09,-143.54)   92.20                67
 11/16/2025   23:51:53   ( -70.08,  -1.60) 11/16/2025   23:52:24  ( -70.08,  -1.58)    0.83                31
 11/17/2025   00:42:37   (  69.98, 165.86) 11/17/2025   00:41:51  (  69.96, 165.90)    1.96                46