Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 9 27.  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)
 09/27/2023   19:31:14   ( -71.37,  61.13) 09/27/2023   19:32:26  ( -71.26,  61.79)   26.40                72
 09/27/2023   20:21:53   (  70.99,-130.91) 09/27/2023   20:21:52  (  70.97,-130.99)    3.24                 1
 09/27/2023   21:12:32   ( -70.75,  36.80) 09/27/2023   21:11:19  ( -70.78,  36.36)   16.53                73
 09/30/2023   08:25:03   ( -71.07,-131.83) 09/30/2023   08:25:39  ( -71.05,-131.86)    2.33                36
 09/30/2023   09:15:47   (  70.95,  35.67) 09/30/2023   09:15:01  (  70.97,  35.68)    2.12                46
 10/02/2023   20:28:15   (  71.12,-132.73) 10/02/2023   20:29:22  (  71.14,-132.69)    2.08                67
 10/02/2023   21:18:57   ( -71.03,  34.74) 10/02/2023   21:18:48  ( -71.01,  34.76)    3.19                 9
 10/02/2023   22:09:29   (  70.29,-156.75) 10/02/2023   22:08:21  (  70.31,-158.60)   69.59                68
 10/05/2023   09:22:08   (  71.06,  33.91) 10/05/2023   09:22:31  (  71.05,  33.86)    1.85                23
 10/05/2023   10:12:50   ( -70.96,-158.62) 10/05/2023   10:11:56  ( -70.98,-158.59)    2.16                54
 10/07/2023   21:25:16   ( -71.10,  33.04) 10/07/2023   21:26:15  ( -71.13,  33.02)    2.83                59
 10/07/2023   22:16:00   (  71.00,-159.48) 10/07/2023   22:15:37  (  71.03,-159.48)    2.74                23
 10/10/2023   09:28:39   (  71.78,  31.05) 10/10/2023   09:29:47  (  71.67,  32.94)   66.99                68
 10/10/2023   10:19:09   ( -71.06,-160.35) 10/10/2023   10:19:22  ( -71.07,-160.37)    1.99                13
 10/10/2023   11:09:53   (  70.96,   7.12) 10/10/2023   11:08:44  (  70.96,   7.12)    0.62                69