Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2022 12 20.  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)
 12/21/2022   08:25:49   ( -70.27,-130.21) 12/21/2022   08:26:25  ( -70.29,-130.20)    1.80                36
 12/21/2022   09:16:32   (  70.16,  37.28) 12/21/2022   09:15:49  (  70.16,  37.27)    0.43                43
 12/24/2022   00:36:45   ( -70.86, -13.85) 12/24/2022   00:37:54  ( -70.75, -12.45)   52.63                69
 12/24/2022   01:27:18   (  70.25, 154.45) 12/24/2022   01:27:25  (  70.24, 154.46)    1.11                 7
 12/24/2022   02:17:51   ( -70.12, -38.00) 12/24/2022   02:16:51  ( -70.13, -38.05)    2.04                60
 12/26/2022   17:38:04   (  70.31, -88.33) 12/26/2022   17:39:02  (  70.30, -88.38)    2.16                58
 12/26/2022   18:28:38   ( -70.20,  79.18) 12/26/2022   18:28:28  ( -70.19,  79.11)    3.41                10
 12/26/2022   19:19:10   (  69.56,-112.53) 12/26/2022   19:18:01  (  69.56,-114.10)   60.64                69
 12/29/2022   10:39:25   ( -70.30,-163.65) 12/29/2022   10:40:04  ( -70.28,-163.69)    3.01                39
 12/29/2022   11:30:07   (  70.22,   3.79) 12/29/2022   11:29:27  (  70.21,   3.86)    3.33                40
 01/01/2023   02:50:21   ( -70.94, -47.36) 01/01/2023   02:51:30  ( -70.84, -45.79)   58.37                69
 01/01/2023   03:40:51   (  70.27, 121.04) 01/01/2023   03:41:02  (  70.27, 121.04)    0.97                11
 01/01/2023   04:31:26   ( -70.15, -71.43) 01/01/2023   04:30:28  ( -70.16, -71.48)    2.33                58