Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 3 26.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 03/28/2025   14:03:12   (  70.42, -34.92) 03/28/2025   14:04:23  (  70.36, -34.45)   19.07                71
 03/28/2025   14:53:51   ( -70.16, 132.81) 03/28/2025   14:53:55  ( -70.14, 132.87)    3.27                 4
 03/28/2025   15:44:34   (  70.01, -59.65) 03/28/2025   15:43:22  (  70.03, -59.64)    1.89                72
 03/31/2025   06:20:00   (  70.21,  81.20) 03/31/2025   06:20:51  (  70.23,  81.25)    2.54                51
 03/31/2025   07:10:42   ( -70.10,-111.31) 03/31/2025   07:10:21  ( -70.12,-111.27)    2.51                21
 03/31/2025   08:01:09   (  69.10,  57.45) 03/31/2025   08:00:03  (  69.17,  55.09)   93.54                66
 04/02/2025   22:36:51   (  70.17,-162.96) 04/02/2025   22:37:16  (  70.19,-162.91)    2.32                25
 04/02/2025   23:27:33   ( -70.06,   4.54) 04/02/2025   23:26:46  ( -70.08,   4.57)    2.82                47
 04/05/2025   14:02:59   ( -70.34, 145.25) 04/05/2025   14:04:11  ( -70.30, 145.51)   10.40                72
 04/05/2025   14:53:40   (  70.11, -47.07) 04/05/2025   14:53:39  (  70.13, -47.09)    2.89                 1
 04/05/2025   15:44:22   ( -69.98, 120.43) 04/05/2025   15:43:10  ( -69.97, 120.31)    4.71                72
 04/08/2025   06:19:47   ( -70.18, -98.72) 04/08/2025   06:20:35  ( -70.18, -98.76)    1.80                48
 04/08/2025   07:10:30   (  70.06,  68.78) 04/08/2025   07:10:02  (  70.06,  68.71)    2.76                28