Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 9 14.  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)
 09/15/2023   05:33:48   (  71.04,  91.05) 09/15/2023   05:34:40  (  71.06,  91.08)    2.45                52
 09/15/2023   06:24:30   ( -70.96,-101.50) 09/15/2023   06:24:05  ( -70.94,-101.44)    2.46                25
 09/17/2023   17:37:12   ( -71.79,  88.92) 09/17/2023   17:38:20  ( -71.67,  91.07)   75.99                68
 09/17/2023   18:27:43   (  71.00,-102.37) 09/17/2023   18:27:54  (  70.97,-102.39)    3.19                11
 09/17/2023   19:18:24   ( -70.86,  65.17) 09/17/2023   19:17:19  ( -70.86,  65.11)    2.33                65
 09/20/2023   06:30:53   ( -71.03,-103.23) 09/20/2023   06:31:44  ( -71.02,-103.30)    3.47                51
 09/20/2023   07:21:37   (  70.97,  64.19) 09/20/2023   07:21:05  (  70.96,  64.26)    3.04                32
 09/22/2023   18:34:14   (  71.57,-104.96) 09/22/2023   18:35:23  (  71.45,-103.60)   49.70                69
 09/22/2023   19:24:47   ( -71.01,  63.33) 09/22/2023   19:24:54  ( -71.03,  63.39)    2.99                 7
 09/22/2023   20:15:30   (  70.84,-129.08) 09/22/2023   20:14:18  (  70.85,-129.22)    4.96                72
 09/25/2023   07:27:59   (  71.04,  62.48) 09/25/2023   07:28:41  (  71.03,  62.42)    2.30                42
 09/25/2023   08:18:41   ( -70.94,-130.04) 09/25/2023   08:18:06  ( -70.95,-130.05)    0.74                35
 09/27/2023   19:31:15   ( -71.40,  61.07) 09/27/2023   19:32:26  ( -71.27,  61.81)   30.33                71
 09/27/2023   20:21:54   (  71.04,-131.00) 09/27/2023   20:21:51  (  71.02,-130.92)    3.46                 3
 09/27/2023   21:12:32   ( -70.73,  36.83) 09/27/2023   21:11:19  ( -70.78,  36.37)   17.59                73