Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 12 15.  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)
 12/17/2023   04:50:18   (  71.38, 101.30) 12/17/2023   04:51:18  (  71.38, 101.25)    1.85                60
 12/17/2023   05:41:00   ( -71.28, -91.22) 12/17/2023   05:40:42  ( -71.29, -91.24)    1.82                18
 12/19/2023   16:53:30   ( -71.49, 100.31) 12/19/2023   16:54:42  ( -71.45, 100.47)    7.17                72
 12/19/2023   17:44:13   (  71.33, -92.11) 12/19/2023   17:44:05  (  71.34, -92.04)    2.81                 8
 12/19/2023   18:34:47   ( -70.82,  76.08) 12/19/2023   18:33:36  ( -70.88,  74.89)   44.01                71
 12/22/2023   04:56:50   (  71.91,  98.74) 12/22/2023   04:57:59  (  71.80, 100.17)   51.23                69
 12/22/2023   05:47:23   ( -71.35, -92.92) 12/22/2023   05:47:30  ( -71.34, -92.93)    0.88                 7
 12/22/2023   06:38:06   (  71.19,  74.66) 12/22/2023   06:36:53  (  71.23,  74.56)    5.47                73
 12/24/2023   17:50:35   (  71.36, -93.75) 12/24/2023   17:50:53  (  71.34, -93.80)    2.89                18
 12/24/2023   18:41:17   ( -71.26,  73.75) 12/24/2023   18:40:17  ( -71.26,  73.73)    0.73                60
 12/27/2023   05:53:45   ( -71.39, -94.58) 12/27/2023   05:54:16  ( -71.41, -94.57)    3.04                31
 12/27/2023   06:44:29   (  71.29,  72.91) 12/27/2023   06:43:39  (  71.30,  72.91)    1.15                50