Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 9 22.  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)
 09/22/2023   18:34:14   (  71.56,-104.94) 09/22/2023   18:35:23  (  71.47,-103.57)   49.26                69
 09/22/2023   19:24:47   ( -71.01,  63.33) 09/22/2023   19:24:55  ( -70.99,  63.33)    1.82                 8
 09/22/2023   20:15:31   (  70.88,-129.15) 09/22/2023   20:14:18  (  70.88,-129.18)    1.37                73
 09/25/2023   07:28:00   (  71.08,  62.42) 09/25/2023   07:28:41  (  71.06,  62.46)    2.30                41
 09/25/2023   08:18:41   ( -70.94,-130.04) 09/25/2023   08:18:06  ( -70.97,-130.02)    3.51                35
 09/27/2023   19:31:15   ( -71.40,  61.07) 09/27/2023   19:32:26  ( -71.29,  61.84)   29.82                71
 09/27/2023   20:21:54   (  71.03,-130.98) 09/27/2023   20:21:52  (  71.00,-130.95)    2.80                 2
 09/27/2023   21:12:32   ( -70.73,  36.83) 09/27/2023   21:11:19  ( -70.81,  36.41)   17.97                73
 09/30/2023   08:25:03   ( -71.04,-131.79) 09/30/2023   08:25:40  ( -71.04,-131.87)    2.79                37
 09/30/2023   09:15:47   (  70.93,  35.70) 09/30/2023   09:15:02  (  70.96,  35.66)    3.22                45
 10/02/2023   20:28:15   (  71.10,-132.69) 10/02/2023   20:29:24  (  71.09,-132.76)    2.59                69
 10/02/2023   21:18:57   ( -71.01,  34.79) 10/02/2023   21:18:49  ( -71.02,  34.79)    2.01                 8
 10/02/2023   22:09:30   (  70.32,-156.79) 10/02/2023   22:08:21  (  70.38,-158.51)   64.54                69
 10/05/2023   09:22:08   (  71.08,  33.87) 10/05/2023   09:22:31  (  71.09,  33.92)    2.03                23
 10/05/2023   10:12:50   ( -70.98,-158.65) 10/05/2023   10:11:57  ( -70.97,-158.61)    1.85                53