Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 1 16.  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)
 01/18/2025   06:20:21   ( -70.19, -98.75) 01/18/2025   06:21:22  ( -70.19, -98.79)    1.59                61
 01/18/2025   07:11:05   (  70.07,  68.74) 01/18/2025   07:10:49  (  70.09,  68.71)    2.45                16
 01/18/2025   08:01:37   ( -69.47,-123.04) 01/18/2025   08:00:27  ( -69.54,-124.42)   54.33                70
 01/20/2025   22:37:09   ( -70.19,  17.06) 01/20/2025   22:37:50  ( -70.16,  17.05)    3.09                41
 01/20/2025   23:27:53   (  70.07,-175.45) 01/20/2025   23:27:17  (  70.05,-175.46)    1.48                36
 01/23/2025   14:03:28   (  70.95, -35.69) 01/23/2025   14:04:36  (  70.86, -33.66)   74.61                68
 01/23/2025   14:53:56   ( -70.14, 132.93) 01/23/2025   14:54:17  ( -70.15, 132.92)    0.99                21
 01/23/2025   15:44:40   (  70.02, -59.58) 01/23/2025   15:43:44  (  70.04, -59.59)    2.15                56
 01/26/2025   06:20:01   (  70.23,  81.27) 01/26/2025   06:21:13  (  70.21,  81.26)    2.37                72
 01/26/2025   07:10:42   ( -70.10,-111.21) 01/26/2025   07:10:43  ( -70.10,-111.26)    1.85                 1
 01/26/2025   08:01:24   (  69.87,  56.44) 01/26/2025   08:00:11  (  69.93,  56.15)   12.75                73
 01/28/2025   22:36:48   (  70.20,-162.88) 01/28/2025   22:37:39  (  70.18,-162.89)    2.24                51
 01/28/2025   23:27:29   ( -70.07,   4.63) 01/28/2025   23:27:09  ( -70.07,   4.59)    1.49                20