Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 12 9.  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)
 12/09/2023   16:40:43   ( -71.30, 103.82) 12/09/2023   16:41:05  ( -71.31, 103.80)    2.23                22
 12/09/2023   17:31:27   (  71.19, -88.68) 12/09/2023   17:30:28  (  71.20, -88.71)    1.89                59
 12/12/2023   04:43:56   (  71.34, 102.96) 12/12/2023   04:44:30  (  71.31, 102.91)    3.25                34
 12/12/2023   05:34:38   ( -71.24, -89.55) 12/12/2023   05:33:54  ( -71.23, -89.57)    0.90                44
 12/14/2023   16:47:07   ( -71.38, 102.08) 12/14/2023   16:47:55  ( -71.37, 102.11)    1.81                48
 12/14/2023   17:37:51   (  71.28, -90.43) 12/14/2023   17:37:18  (  71.26, -90.40)    2.77                33
 12/17/2023   04:50:18   (  71.39, 101.28) 12/17/2023   04:51:18  (  71.38, 101.25)    1.27                60
 12/17/2023   05:41:00   ( -71.28, -91.22) 12/17/2023   05:40:42  ( -71.30, -91.22)    1.81                18
 12/19/2023   16:53:30   ( -71.50, 100.30) 12/19/2023   16:54:42  ( -71.46, 100.48)    7.97                72
 12/19/2023   17:44:12   (  71.30, -92.04) 12/19/2023   17:44:06  (  71.29, -92.12)    2.97                 6
 12/19/2023   18:34:47   ( -70.83,  76.07) 12/19/2023   18:33:36  ( -70.88,  74.90)   43.10                71
 12/22/2023   04:56:50   (  71.93,  98.71) 12/22/2023   04:57:59  (  71.81, 100.18)   52.92                69
 12/22/2023   05:47:23   ( -71.36, -92.94) 12/22/2023   05:47:30  ( -71.35, -92.91)    1.48                 7
 12/22/2023   06:38:06   (  71.21,  74.63) 12/22/2023   06:36:53  (  71.23,  74.57)    3.30                73