Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 9 11.  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)
 09/12/2023   16:40:08   (  71.86, -76.94) 09/12/2023   16:41:14  (  71.76, -74.46)   86.62                66
 09/12/2023   17:30:35   ( -71.00,  91.91) 09/12/2023   17:30:51  ( -70.99,  91.96)    2.61                16
 09/12/2023   18:21:19   (  70.88,-100.58) 09/12/2023   18:20:14  (  70.89,-100.53)    2.47                65
 09/15/2023   05:33:48   (  71.03,  91.05) 09/15/2023   05:34:40  (  71.06,  91.08)    3.19                52
 09/15/2023   06:24:30   ( -70.95,-101.49) 09/15/2023   06:24:05  ( -70.95,-101.43)    2.36                25
 09/17/2023   17:37:13   ( -71.83,  88.85) 09/17/2023   17:38:20  ( -71.70,  91.11)   80.27                67
 09/17/2023   18:27:43   (  70.99,-102.36) 09/17/2023   18:27:54  (  70.99,-102.35)    0.39                11
 09/17/2023   19:18:25   ( -70.90,  65.10) 09/17/2023   19:17:19  ( -70.89,  65.15)    2.20                66
 09/20/2023   06:30:54   ( -71.07,-103.29) 09/20/2023   06:31:44  ( -71.07,-103.23)    2.11                50
 09/20/2023   07:21:37   (  70.96,  64.21) 09/20/2023   07:21:06  (  70.95,  64.25)    1.66                31
 09/22/2023   18:34:15   (  71.60,-105.01) 09/22/2023   18:35:24  (  71.47,-103.57)   52.95                69
 09/22/2023   19:24:47   ( -70.98,  63.37) 09/22/2023   19:24:56  ( -71.00,  63.35)    2.37                 9
 09/22/2023   20:15:31   (  70.87,-129.14) 09/22/2023   20:14:19  (  70.88,-129.18)    1.69                72