Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 12 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)
 12/14/2023   16:47:06   ( -71.36, 102.12) 12/14/2023   16:47:54  ( -71.38, 102.13)    2.34                48
 12/14/2023   17:37:50   (  71.26, -90.39) 12/14/2023   17:37:17  (  71.28, -90.37)    2.35                33
 12/17/2023   04:50:19   (  71.41, 101.23) 12/17/2023   04:51:18  (  71.39, 101.27)    2.41                59
 12/17/2023   05:41:01   ( -71.31, -91.28) 12/17/2023   05:40:42  ( -71.31, -91.21)    2.33                19
 12/19/2023   16:53:30   ( -71.47, 100.34) 12/19/2023   16:54:42  ( -71.46, 100.48)    5.34                72
 12/19/2023   17:44:13   (  71.32, -92.08) 12/19/2023   17:44:06  (  71.29, -92.12)    2.92                 7
 12/19/2023   18:34:47   ( -70.80,  76.11) 12/19/2023   18:33:36  ( -70.88,  74.90)   45.13                71
 12/22/2023   04:56:50   (  71.90,  98.77) 12/22/2023   04:57:59  (  71.80, 100.17)   49.81                69
 12/22/2023   05:47:23   ( -71.33, -92.89) 12/22/2023   05:47:30  ( -71.34, -92.93)    1.76                 7
 12/22/2023   06:38:06   (  71.18,  74.68) 12/22/2023   06:36:53  (  71.22,  74.55)    7.22                73
 12/24/2023   17:50:36   (  71.40, -93.81) 12/24/2023   17:50:52  (  71.38, -93.73)    3.19                16
 12/24/2023   18:41:16   ( -71.24,  73.78) 12/24/2023   18:40:16  ( -71.25,  73.71)    2.57                60