Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 9 16.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/17/2023   17:37:12   ( -71.80,  88.91) 09/17/2023   17:38:19  ( -71.72,  91.16)   78.70                67
 09/17/2023   18:27:43   (  71.00,-102.39) 09/17/2023   18:27:54  (  70.97,-102.39)    3.74                11
 09/17/2023   19:18:24   ( -70.87,  65.16) 09/17/2023   19:17:19  ( -70.86,  65.10)    2.05                65
 09/20/2023   06:30:53   ( -71.04,-103.24) 09/20/2023   06:31:44  ( -71.03,-103.29)    2.15                51
 09/20/2023   07:21:37   (  70.92,  64.27) 09/20/2023   07:21:07  (  70.92,  64.20)    2.49                30
 09/22/2023   18:34:15   (  71.57,-104.96) 09/22/2023   18:35:24  (  71.48,-103.55)   50.73                69
 09/22/2023   19:24:48   ( -71.01,  63.32) 09/22/2023   19:24:56  ( -71.01,  63.36)    1.23                 8
 09/22/2023   20:15:31   (  70.90,-129.17) 09/22/2023   20:14:18  (  70.89,-129.17)    1.17                73
 09/25/2023   07:27:59   (  71.04,  62.49) 09/25/2023   07:28:42  (  71.04,  62.43)    2.18                43
 09/25/2023   08:18:41   ( -70.94,-130.04) 09/25/2023   08:18:07  ( -70.96,-130.05)    1.52                34
 09/27/2023   19:31:16   ( -71.45,  60.98) 09/27/2023   19:32:27  ( -71.31,  61.86)   34.96                71
 09/27/2023   20:21:54   (  71.03,-130.99) 09/27/2023   20:21:53  (  71.01,-130.95)    3.04                 1
 09/27/2023   21:12:33   ( -70.78,  36.75) 09/27/2023   21:11:20  ( -70.82,  36.42)   12.84                73