Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 9 13.  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   (  71.03,  91.06) 09/15/2023   05:34:41  (  71.01,  91.00)    2.85                53
 09/15/2023   06:24:30   ( -70.94,-101.48) 09/15/2023   06:24:05  ( -70.95,-101.43)    2.20                25
 09/17/2023   17:37:11   ( -71.78,  88.95) 09/17/2023   17:38:19  ( -71.68,  91.09)   75.35                68
 09/17/2023   18:27:42   (  70.99,-102.35) 09/17/2023   18:27:53  (  70.98,-102.38)    1.40                11
 09/17/2023   19:18:24   ( -70.90,  65.11) 09/17/2023   19:17:18  ( -70.87,  65.12)    3.23                66
 09/20/2023   06:30:53   ( -71.07,-103.29) 09/20/2023   06:31:42  ( -71.08,-103.21)    3.01                49
 09/20/2023   07:21:37   (  70.95,  64.21) 09/20/2023   07:21:05  (  70.96,  64.28)    2.33                32
 09/22/2023   18:34:14   (  71.55,-104.93) 09/22/2023   18:35:23  (  71.45,-103.59)   48.48                69
 09/22/2023   19:24:47   ( -70.99,  63.36) 09/22/2023   19:24:55  ( -70.98,  63.32)    1.95                 8
 09/22/2023   20:15:30   (  70.83,-129.06) 09/22/2023   20:14:18  (  70.86,-129.21)    6.36                72
 09/25/2023   07:28:00   (  71.07,  62.43) 09/25/2023   07:28:41  (  71.04,  62.43)    3.40                41
 09/25/2023   08:18:42   ( -70.98,-130.09) 09/25/2023   08:18:06  ( -70.96,-130.04)    2.79                36