Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 11 22.  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)
 11/23/2025   14:53:44   ( -70.13, 132.85) 11/23/2025   14:54:35  ( -70.15, 132.91)    2.72                51
 11/23/2025   15:44:28   (  70.02, -59.66) 11/23/2025   15:44:03  (  69.99, -59.67)    3.04                25
 11/23/2025   16:34:54   ( -69.07, 109.03) 11/23/2025   16:33:47  ( -69.11, 106.78)   89.52                67
 11/26/2025   06:20:16   (  70.94,  79.99) 11/26/2025   06:21:23  (  70.85,  82.20)   81.21                67
 11/26/2025   07:10:44   ( -70.10,-111.35) 11/26/2025   07:11:05  ( -70.09,-111.30)    2.84                21
 11/26/2025   08:01:28   (  69.99,  56.13) 11/26/2025   08:00:32  (  69.98,  56.20)    3.12                56
 11/28/2025   22:37:01   (  70.14,-162.96) 11/28/2025   22:38:04  (  70.16,-162.94)    2.50                63
 11/28/2025   23:27:43   ( -70.03,   4.52) 11/28/2025   23:27:34  ( -70.05,   4.54)    2.90                 9
 11/29/2025   00:18:19   (  69.50, 172.61) 11/29/2025   00:17:08  (  69.56, 171.50)   43.82                71
 12/01/2025   14:53:59   (  70.08, -47.11) 12/01/2025   14:54:32  (  70.10, -47.14)    3.01                33
 12/01/2025   15:44:42   ( -70.01, 120.30) 12/01/2025   15:44:02  ( -70.00, 120.35)    2.38                40
 12/04/2025   06:20:19   ( -70.37, -99.13) 12/04/2025   06:21:31  ( -70.30, -98.62)   20.86                72
 12/04/2025   07:10:59   (  70.07,  68.65) 12/04/2025   07:11:00  (  70.08,  68.71)    2.39                 1
 12/04/2025   08:01:41   ( -69.95,-123.85) 12/04/2025   08:00:30  ( -69.97,-123.80)    3.22                71