Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 1 20.  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)
 01/22/2025   06:45:32   ( -70.18,-105.03) 01/22/2025   06:46:14  ( -70.16,-105.01)    1.88                42
 01/22/2025   07:36:16   (  70.05,  62.47) 01/22/2025   07:35:41  (  70.06,  62.49)    0.74                35
 01/24/2025   22:11:53   (  71.06,-157.98) 01/24/2025   22:12:59  (  70.97,-155.55)   88.30                66
 01/24/2025   23:02:19   ( -70.15,  10.81) 01/24/2025   23:02:42  ( -70.15,  10.86)    1.62                23
 01/24/2025   23:53:03   (  70.03, 178.31) 01/24/2025   23:52:09  (  70.04, 178.35)    1.94                54
 01/27/2025   14:28:27   (  70.36, -41.04) 01/27/2025   14:29:38  (  70.30, -40.67)   15.74                71
 01/27/2025   15:19:05   ( -70.08, 126.71) 01/27/2025   15:19:10  ( -70.08, 126.65)    2.45                 5
 01/27/2025   16:09:49   (  69.96, -65.79) 01/27/2025   16:08:37  (  69.97, -65.86)    2.98                72
 01/30/2025   06:45:09   (  70.16,  75.09) 01/30/2025   06:46:05  (  70.18,  75.05)    2.86                56
 01/30/2025   07:35:51   ( -70.08,-117.49) 01/30/2025   07:35:35  ( -70.07,-117.47)    1.41                16
 01/30/2025   08:26:22   (  69.27,  51.02) 01/30/2025   08:25:14  (  69.29,  49.11)   74.92                68
 02/01/2025   23:01:56   (  70.17,-169.14) 02/01/2025   23:02:30  (  70.17,-169.07)    2.71                34
 02/01/2025   23:52:37   ( -70.05,  -1.63) 02/01/2025   23:52:00  ( -70.07,  -1.58)    2.94                37