Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 4 5.  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)
 04/06/2023   17:12:29   ( -70.59,  97.33) 04/06/2023   17:13:38  ( -70.59,  97.40)    2.69                69
 04/06/2023   18:03:12   (  70.42, -95.10) 04/06/2023   18:03:02  (  70.43, -95.18)    2.94                10
 04/06/2023   18:53:45   ( -69.86,  73.08) 04/06/2023   18:52:35  ( -69.92,  71.76)   50.90                70
 04/09/2023   06:06:20   ( -70.56, -96.11) 04/09/2023   06:07:15  ( -70.57, -96.06)    1.73                55
 04/09/2023   06:57:04   (  70.45,  71.38) 04/09/2023   06:56:38  (  70.46,  71.44)    2.50                26
 04/11/2023   19:00:10   ( -70.55,  70.45) 04/11/2023   19:00:50  ( -70.56,  70.51)    2.84                40
 04/11/2023   19:50:53   (  70.39,-121.99) 04/11/2023   19:50:14  (  70.40,-122.07)    3.20                39
 04/14/2023   07:54:01   ( -70.54,-123.01) 04/14/2023   07:54:26  ( -70.53,-122.97)    2.60                25
 04/14/2023   08:44:44   (  70.39,  44.55) 04/14/2023   08:43:49  (  70.42,  44.54)    3.47                55
 04/16/2023   19:57:19   (  71.12,-124.74) 04/16/2023   19:58:28  (  71.02,-123.30)   53.08                69
 04/16/2023   20:47:51   ( -70.50,  43.60) 04/16/2023   20:48:01  ( -70.51,  43.58)    1.20                10
 04/16/2023   21:38:35   (  70.39,-148.93) 04/16/2023   21:37:24  (  70.40,-148.91)    0.85                71
 04/19/2023   08:51:00   (  70.61,  42.64) 04/19/2023   08:52:10  (  70.58,  42.62)    3.34                70
 04/19/2023   09:41:42   ( -70.51,-149.89) 04/19/2023   09:41:35  ( -70.50,-149.84)    2.00                 7
 04/19/2023   10:32:16   (  69.88,  18.39) 04/19/2023   10:31:06  (  69.96,  17.05)   52.00                70