Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 9 18.  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)
 09/20/2023   06:30:53   ( -71.05,-103.26) 09/20/2023   06:31:43  ( -71.06,-103.24)    1.25                50
 09/20/2023   07:21:37   (  70.93,  64.26) 09/20/2023   07:21:06  (  70.95,  64.25)    2.43                31
 09/22/2023   18:34:15   (  71.58,-104.98) 09/22/2023   18:35:24  (  71.45,-103.61)   50.56                69
 09/22/2023   19:24:48   ( -71.03,  63.30) 09/22/2023   19:24:55  ( -71.02,  63.38)    2.71                 7
 09/22/2023   20:15:31   (  70.85,-129.10) 09/22/2023   20:14:19  (  70.85,-129.22)    4.40                72
 09/25/2023   07:28:00   (  71.04,  62.47) 09/25/2023   07:28:42  (  71.04,  62.43)    1.85                42
 09/25/2023   08:18:41   ( -70.96,-130.06) 09/25/2023   08:18:06  ( -70.95,-130.06)    0.58                35
 09/27/2023   19:31:15   ( -71.41,  61.05) 09/27/2023   19:32:26  ( -71.27,  61.81)   30.89                71
 09/27/2023   20:21:53   (  70.99,-130.91) 09/27/2023   20:21:52  (  70.97,-130.99)    3.15                 1
 09/27/2023   21:12:32   ( -70.74,  36.82) 09/27/2023   21:11:19  ( -70.79,  36.38)   17.03                73
 09/30/2023   08:25:03   ( -71.04,-131.80) 09/30/2023   08:25:39  ( -71.07,-131.82)    3.29                36
 09/30/2023   09:15:47   (  70.94,  35.69) 09/30/2023   09:15:02  (  70.93,  35.62)    2.50                45