Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 1 18.  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)
 01/19/2025   14:28:45   ( -70.18, 139.17) 01/19/2025   14:29:46  ( -70.16, 139.11)    2.98                61
 01/19/2025   15:19:29   (  70.06, -53.34) 01/19/2025   15:19:13  (  70.06, -53.39)    1.86                16
 01/19/2025   16:10:01   ( -69.46, 114.87) 01/19/2025   16:08:51  ( -69.51, 113.48)   54.24                70
 01/22/2025   06:45:32   ( -70.14,-104.97) 01/22/2025   06:46:15  ( -70.16,-105.01)    2.92                43
 01/22/2025   07:36:17   (  70.07,  62.45) 01/22/2025   07:35:42  (  70.05,  62.48)    2.38                35
 01/24/2025   22:11:53   (  71.07,-157.99) 01/24/2025   22:12:59  (  70.98,-155.53)   89.53                66
 01/24/2025   23:02:19   ( -70.16,  10.80) 01/24/2025   23:02:42  ( -70.16,  10.88)    3.03                23
 01/24/2025   23:53:03   (  70.03, 178.30) 01/24/2025   23:52:09  (  70.05, 178.37)    3.38                54
 01/27/2025   14:28:27   (  70.37, -41.05) 01/27/2025   14:29:39  (  70.29, -40.69)   15.96                72
 01/27/2025   15:19:06   ( -70.13, 126.63) 01/27/2025   15:19:10  ( -70.13, 126.71)    3.06                 4
 01/27/2025   16:09:50   (  70.01, -65.87) 01/27/2025   16:08:37  (  70.01, -65.80)    2.63                73
 01/30/2025   06:45:11   (  70.20,  75.02) 01/30/2025   06:46:07  (  70.20,  75.08)    2.48                56
 01/30/2025   07:35:52   ( -70.07,-117.47) 01/30/2025   07:35:38  ( -70.05,-117.51)    3.25                14
 01/30/2025   08:26:24   (  69.31,  50.95) 01/30/2025   08:25:15  (  69.38,  49.22)   68.40                69