Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 2 2.  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)
 02/02/2023   06:45:12   ( -70.84,-106.08) 02/02/2023   06:46:20  ( -70.77,-104.14)   71.27                68
 02/02/2023   07:35:43   (  70.05,  62.50) 02/02/2023   07:35:58  (  70.07,  62.48)    3.23                15
 02/02/2023   08:26:25   ( -69.96,-130.06) 02/02/2023   08:25:28  ( -69.96,-130.05)    0.35                57
 02/04/2023   23:01:50   ( -70.12,  10.85) 02/04/2023   23:03:01  ( -70.14,  10.80)    2.93                71
 02/04/2023   23:52:35   (  70.06, 178.25) 02/04/2023   23:52:28  (  70.04, 178.30)    2.88                 7
 02/05/2023   00:43:13   ( -69.76, -13.99) 02/05/2023   00:42:00  ( -69.82, -14.38)   16.34                73
 02/07/2023   15:18:42   ( -70.08, 126.68) 02/07/2023   15:19:32  ( -70.09, 126.60)    2.94                50
 02/07/2023   16:09:26   (  69.97, -65.85) 02/07/2023   16:08:59  (  69.99, -65.90)    2.60                27
 02/07/2023   16:59:51   ( -68.98, 102.90) 02/07/2023   16:58:45  ( -69.00, 100.40)   99.41                66
 02/10/2023   07:35:34   ( -70.05,-117.50) 02/10/2023   07:36:02  ( -70.08,-117.55)    2.93                28
 02/10/2023   08:26:18   (  69.95,  49.97) 02/10/2023   08:25:29  (  69.97,  49.95)    2.56                49
 02/12/2023   23:01:48   (  70.34,-169.48) 02/12/2023   23:03:00  (  70.25,-169.05)   18.81                72
 02/12/2023   23:52:26   ( -70.03,  -1.69) 02/12/2023   23:52:32  ( -70.04,  -1.72)    1.58                 6
 02/13/2023   00:43:10   (  69.92, 165.78) 02/13/2023   00:41:59  (  69.93, 165.77)    0.52                71
 02/15/2023   15:18:35   (  70.11, -53.36) 02/15/2023   15:19:30  (  70.14, -53.33)    3.28                55
 02/15/2023   16:09:17   ( -70.01, 114.11) 02/15/2023   16:09:00  ( -70.04, 114.15)    3.38                17
 02/15/2023   16:59:47   (  69.16, -77.35) 02/15/2023   16:58:39  (  69.26, -79.26)   76.09                68