Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 11 15.  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)
 11/18/2025   07:10:28   (  70.06,  68.77) 11/18/2025   07:11:03  (  70.07,  68.69)    3.01                35
 11/18/2025   08:01:10   ( -69.98,-123.78) 11/18/2025   08:00:33  ( -69.96,-123.82)    2.17                37
 11/20/2025   22:36:51   ( -70.52,  16.50) 11/20/2025   22:38:02  ( -70.37,  17.35)   35.87                71
 11/20/2025   23:27:28   (  70.03,-175.43) 11/20/2025   23:27:33  (  70.04,-175.47)    1.75                 5
 11/21/2025   00:18:10   ( -69.94,  -7.97) 11/21/2025   00:17:03  ( -69.93,  -7.99)    0.88                67
 11/23/2025   14:53:44   ( -70.12, 132.87) 11/23/2025   14:54:35  ( -70.13, 132.89)    0.80                51
 11/23/2025   15:44:28   (  70.01, -59.65) 11/23/2025   15:44:02  (  70.01, -59.63)    1.00                26
 11/23/2025   16:34:54   ( -69.07, 109.04) 11/23/2025   16:33:47  ( -69.09, 106.75)   90.96                67
 11/26/2025   06:20:15   (  70.90,  80.06) 11/26/2025   06:21:22  (  70.82,  82.17)   77.57                67
 11/26/2025   07:10:43   ( -70.06,-111.28) 11/26/2025   07:11:04  ( -70.06,-111.32)    1.66                21
 11/26/2025   08:01:26   (  69.96,  56.19) 11/26/2025   08:00:30  (  69.95,  56.16)    1.44                56
 11/28/2025   22:36:59   (  70.12,-162.93) 11/28/2025   22:38:01  (  70.11,-163.00)    2.92                62
 11/28/2025   23:27:41   ( -70.01,   4.56) 11/28/2025   23:27:31  ( -70.01,   4.49)    2.55                10
 11/29/2025   00:18:16   (  69.43, 172.72) 11/29/2025   00:17:06  (  69.45, 171.37)   52.72                70