Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 1 11.  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)
 01/11/2023   23:02:08   (  70.16,-169.21) 01/11/2023   23:02:55  (  70.14,-169.15)    3.17                47
 01/11/2023   23:52:49   ( -70.02,  -1.68) 01/11/2023   23:52:25  ( -70.03,  -1.67)    0.78                24
 01/14/2023   15:19:01   (  70.09, -53.33) 01/14/2023   15:19:23  (  70.10, -53.32)    1.16                22
 01/14/2023   16:09:43   ( -70.00, 114.12) 01/14/2023   16:08:53  ( -69.99, 114.16)    1.70                50
 01/17/2023   06:45:11   ( -70.19,-105.03) 01/17/2023   06:46:23  ( -70.19,-104.95)    3.11                72
 01/17/2023   07:35:54   (  70.02,  62.53) 01/17/2023   07:35:51  (  70.02,  62.46)    2.72                 3
 01/17/2023   08:26:35   ( -69.88,-129.93) 01/17/2023   08:25:21  ( -69.92,-130.05)    6.28                74
 01/19/2023   23:02:03   ( -70.13,  10.83) 01/19/2023   23:02:49  ( -70.14,  10.88)    2.29                46
 01/19/2023   23:52:47   (  70.02, 178.30) 01/19/2023   23:52:16  (  70.03, 178.36)    2.23                31
 01/22/2023   14:28:27   (  70.87, -41.89) 01/22/2023   14:29:35  (  70.77, -39.94)   72.20                68
 01/22/2023   15:18:56   ( -70.08, 126.67) 01/22/2023   15:19:16  ( -70.06, 126.66)    2.35                20
 01/22/2023   16:09:40   (  69.98, -65.86) 01/22/2023   16:08:43  (  69.95, -65.86)    3.68                57