Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 4 14.  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)
 04/14/2023   07:54:01   ( -70.55,-123.01) 04/14/2023   07:54:26  ( -70.53,-122.96)    2.42                25
 04/14/2023   08:44:44   (  70.38,  44.56) 04/14/2023   08:43:50  (  70.38,  44.48)    3.00                54
 04/16/2023   19:57:19   (  71.11,-124.73) 04/16/2023   19:58:28  (  71.04,-123.27)   53.30                69
 04/16/2023   20:47:51   ( -70.50,  43.59) 04/16/2023   20:48:01  ( -70.52,  43.60)    1.92                10
 04/16/2023   21:38:35   (  70.39,-148.92) 04/16/2023   21:37:25  (  70.37,-148.96)    2.88                70
 04/19/2023   08:51:00   (  70.61,  42.64) 04/19/2023   08:52:10  (  70.61,  42.66)    0.79                70
 04/19/2023   09:41:41   ( -70.46,-149.82) 04/19/2023   09:41:36  ( -70.47,-149.89)    2.85                 5
 04/19/2023   10:32:16   (  69.88,  18.39) 04/19/2023   10:31:06  (  69.99,  17.08)   51.35                70
 04/21/2023   21:44:49   (  70.58,-150.79) 04/21/2023   21:45:43  (  70.58,-150.79)    0.38                54
 04/21/2023   22:35:31   ( -70.49,  16.68) 04/21/2023   22:35:08  ( -70.50,  16.73)    2.16                23
 04/24/2023   10:38:39   (  70.57,  15.77) 04/24/2023   10:39:16  (  70.57,  15.78)    0.70                37
 04/24/2023   11:29:21   ( -70.48,-176.76) 04/24/2023   11:28:41  ( -70.49,-176.69)    3.08                40
 04/26/2023   23:32:29   (  70.57,-177.69) 04/26/2023   23:32:49  (  70.53,-177.68)    3.67                20
 04/27/2023   00:23:11   ( -70.47, -10.22) 04/27/2023   00:22:14  ( -70.45, -10.16)    3.26                57