Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 5 26.  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)
 05/27/2023   06:06:10   ( -71.09, -96.98) 05/27/2023   06:07:21  ( -70.92, -96.08)   37.15                71
 05/27/2023   06:56:47   (  70.60,  71.13) 05/27/2023   06:56:48  (  70.61,  71.10)    1.42                 1
 05/27/2023   07:47:27   ( -70.41,-121.25) 05/27/2023   07:46:14  ( -70.46,-121.46)    9.46                73
 05/29/2023   18:59:58   ( -70.68,  70.20) 05/29/2023   19:00:50  ( -70.69,  70.18)    0.83                52
 05/29/2023   19:50:42   (  70.57,-122.30) 05/29/2023   19:50:13  (  70.58,-122.32)    1.53                29
 06/01/2023   07:53:53   ( -70.65,-123.24) 06/01/2023   07:54:15  ( -70.64,-123.26)    1.69                22
 06/01/2023   08:44:37   (  70.54,  44.26) 06/01/2023   08:43:38  (  70.53,  44.23)    1.87                59
 06/03/2023   19:57:06   (  70.73,-124.15) 06/03/2023   19:58:14  (  70.70,-124.20)    3.24                68
 06/03/2023   20:47:48   ( -70.63,  43.32) 06/03/2023   20:47:39  ( -70.63,  43.34)    1.08                 9
 06/03/2023   21:38:19   (  69.89,-148.22) 06/03/2023   21:37:11  (  69.95,-149.96)   66.94                68
 06/06/2023   08:51:00   (  70.71,  42.38) 06/06/2023   08:51:36  (  70.71,  42.44)    2.31                36
 06/06/2023   09:41:42   ( -70.62,-150.14) 06/06/2023   09:41:02  ( -70.60,-150.08)    3.34                40
 06/08/2023   20:54:20   ( -71.28,  40.64) 06/08/2023   20:55:30  ( -71.17,  42.11)   54.01                70
 06/08/2023   21:44:54   (  70.66,-151.01) 06/08/2023   21:45:00  (  70.65,-151.02)    1.11                 6
 06/08/2023   22:35:36   ( -70.56,  16.47) 06/08/2023   22:34:26  ( -70.54,  16.46)    2.19                70