Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 10 26.  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)
 10/26/2025   15:18:44   ( -70.06, 126.68) 10/26/2025   15:19:20  ( -70.05, 126.64)    1.97                36
 10/26/2025   16:09:29   (  69.97, -65.87) 10/26/2025   16:08:47  (  69.95, -65.86)    2.55                42
 10/29/2025   06:45:01   (  70.57,  74.36) 10/29/2025   06:46:11  (  70.46,  75.49)   43.41                70
 10/29/2025   07:35:34   ( -70.03,-117.48) 10/29/2025   07:35:47  ( -70.02,-117.51)    1.71                13
 10/29/2025   08:26:18   (  69.89,  50.04) 10/29/2025   08:25:14  (  69.92,  49.98)    3.21                64
 10/31/2025   23:01:42   (  70.13,-169.15) 10/31/2025   23:02:42  (  70.13,-169.11)    1.88                60
 10/31/2025   23:52:23   ( -70.01,  -1.65) 10/31/2025   23:52:12  ( -70.02,  -1.63)    1.10                11
 11/01/2025   00:42:57   (  69.35, 166.63) 11/01/2025   00:41:48  (  69.41, 165.18)   57.16                69
 11/03/2025   15:18:31   (  70.07, -53.27) 11/03/2025   15:19:08  (  70.09, -53.27)    1.59                37
 11/03/2025   16:09:13   ( -70.00, 114.16) 11/03/2025   16:08:38  ( -69.98, 114.22)    3.17                35
 11/06/2025   06:44:48   ( -70.77,-105.89) 11/06/2025   06:45:57  ( -70.68,-104.14)   64.96                69
 11/06/2025   07:35:20   (  70.02,  62.60) 11/06/2025   07:35:34  (  70.02,  62.53)    2.77                14
 11/06/2025   08:26:02   ( -69.94,-129.96) 11/06/2025   08:25:03  ( -69.97,-129.90)    3.23                59
 11/08/2025   23:01:26   ( -70.15,  10.90) 11/08/2025   23:02:31  ( -70.14,  10.97)    2.79                65
 11/08/2025   23:52:10   (  70.03, 178.38) 11/08/2025   23:51:58  (  70.02, 178.45)    2.77                12
 11/09/2025   00:42:45   ( -69.58, -13.62) 11/09/2025   00:41:33  ( -69.65, -14.44)   32.54                72