Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 12 20.  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)
 12/22/2023   04:56:49   (  71.87,  98.82) 12/22/2023   04:57:59  (  71.76, 100.11)   46.03                70
 12/22/2023   05:47:23   ( -71.36, -92.94) 12/22/2023   05:47:29  ( -71.34, -92.92)    1.67                 6
 12/22/2023   06:38:05   (  71.15,  74.74) 12/22/2023   06:36:53  (  71.19,  74.49)    9.87                72
 12/24/2023   17:50:35   (  71.38, -93.78) 12/24/2023   17:50:51  (  71.37, -93.75)    1.15                16
 12/24/2023   18:41:17   ( -71.28,  73.71) 12/24/2023   18:40:15  ( -71.29,  73.77)    2.10                62
 12/27/2023   05:53:45   ( -71.42, -94.63) 12/27/2023   05:54:14  ( -71.39, -94.59)    3.24                29
 12/27/2023   06:44:28   (  71.26,  72.95) 12/27/2023   06:43:37  (  71.28,  72.89)    2.94                51
 12/29/2023   17:56:55   (  71.41, -95.41) 12/29/2023   17:57:34  (  71.41, -95.43)    0.83                39
 12/29/2023   18:47:37   ( -71.31,  72.08) 12/29/2023   18:46:58  ( -71.33,  72.09)    2.17                39
 01/01/2024   06:00:05   ( -71.47, -96.29) 01/01/2024   06:00:56  ( -71.44, -96.27)    3.31                51
 01/01/2024   06:50:48   (  71.31,  71.28) 01/01/2024   06:50:19  (  71.32,  71.20)    3.03                29