Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 7 30.  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)
 07/31/2023   20:09:19   (  71.02,-127.76) 07/31/2023   20:10:30  (  70.99,-127.46)   11.17                71
 07/31/2023   20:59:59   ( -70.82,  39.90) 07/31/2023   20:59:57  ( -70.80,  39.90)    2.31                 2
 07/31/2023   21:50:36   (  70.35,-152.03) 07/31/2023   21:49:25  (  70.41,-153.02)   37.25                71
 08/03/2023   09:03:09   (  70.89,  38.99) 08/03/2023   09:03:53  (  70.91,  39.04)    2.22                44
 08/03/2023   09:53:51   ( -70.80,-153.53) 08/03/2023   09:53:19  ( -70.77,-153.51)    3.02                32
 08/05/2023   21:06:33   ( -71.80,  36.62) 08/05/2023   21:07:39  ( -71.67,  39.23)   92.03                66
 08/05/2023   21:57:01   (  70.87,-154.45) 08/05/2023   21:57:15  (  70.85,-154.41)    3.27                14
 08/05/2023   22:47:43   ( -70.77,  13.03) 08/05/2023   22:46:40  ( -70.76,  13.11)    3.19                63
 08/08/2023   10:00:07   ( -70.91,-155.28) 08/08/2023   10:01:12  ( -70.93,-155.31)    2.92                65
 08/08/2023   10:50:51   (  70.81,  12.19) 08/08/2023   10:50:35  (  70.82,  12.18)    1.00                16
 08/08/2023   11:41:20   ( -70.03,-179.25) 08/08/2023   11:40:12  ( -70.07, 178.75)   75.84                68
 08/10/2023   22:53:59   ( -70.90,  11.26) 08/10/2023   22:54:33  ( -70.87,  11.24)    2.79                34
 08/10/2023   23:44:42   (  70.75, 178.82) 08/10/2023   23:43:56  (  70.76, 178.74)    3.23                46