Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2022 12 28.  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)
 12/28/2022   19:01:09   (  70.31,-109.13) 12/28/2022   19:01:49  (  70.29,-109.11)    1.76                40
 12/28/2022   19:51:50   ( -70.17,  58.40) 12/28/2022   19:51:15  ( -70.17,  58.36)    1.32                35
 12/31/2022   07:55:04   (  70.29,  57.41) 12/31/2022   07:55:55  (  70.30,  57.35)    2.67                51
 12/31/2022   08:45:46   ( -70.20,-135.13) 12/31/2022   08:45:21  ( -70.18,-135.17)    2.77                25
 01/02/2023   20:49:00   (  70.32,-136.14) 01/02/2023   20:50:00  (  70.34,-136.13)    1.76                60
 01/02/2023   21:39:42   ( -70.23,  31.33) 01/02/2023   21:39:26  ( -70.22,  31.34)    1.82                16
 01/02/2023   22:30:10   (  69.27,-159.95) 01/02/2023   22:29:04  (  69.32,-162.22)   89.65                66
 01/05/2023   09:42:56   (  70.37,  30.31) 01/05/2023   09:44:05  (  70.36,  30.35)    1.85                69
 01/05/2023   10:33:37   ( -70.22,-162.14) 01/05/2023   10:33:31  ( -70.24,-162.18)    2.06                 6
 01/05/2023   11:24:12   (  69.63,   6.05) 01/05/2023   11:23:02  (  69.73,   4.78)   50.17                70
 01/07/2023   22:36:56   (  70.63,-163.59) 01/07/2023   22:38:07  (  70.52,-162.96)   26.44                71
 01/07/2023   23:27:33   ( -70.27,   4.30) 01/07/2023   23:27:35  ( -70.29,   4.36)    3.31                 2
 01/08/2023   00:18:14   (  70.00, 172.01) 01/08/2023   00:17:01  (  70.06, 171.69)   13.74                73
 01/10/2023   11:30:56   (  70.95,   2.40) 01/10/2023   11:32:05  (  70.83,   3.96)   58.42                69
 01/10/2023   12:21:27   ( -70.27, 170.81) 01/10/2023   12:21:39  ( -70.27, 170.79)    0.86                12
 01/10/2023   13:12:11   (  70.16, -21.72) 01/10/2023   13:11:03  (  70.14, -21.73)    2.51                68