Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 4 26.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-9) LANDSAT-9 Lat/Lon    Distance(km)  Time Diff(sec)
 04/28/2025   06:44:51   ( -70.19,-105.02) 04/28/2025   06:45:45  ( -70.21,-105.00)    1.99                54
 04/28/2025   07:35:35   (  70.10,  62.44) 04/28/2025   07:35:12  (  70.10,  62.50)    2.43                23
 04/28/2025   08:26:03   ( -69.24,-128.99) 04/28/2025   08:24:55  ( -69.28,-130.99)   79.09                68
 04/30/2025   23:01:49   ( -70.15,  10.81) 04/30/2025   23:02:15  ( -70.14,  10.79)    0.88                26
 04/30/2025   23:52:33   (  70.05, 178.27) 04/30/2025   23:51:42  (  70.04, 178.28)    1.51                51
 05/03/2025   14:28:05   (  70.23, -40.88) 05/03/2025   14:29:14  (  70.20, -40.89)    3.29                69
 05/03/2025   15:18:47   ( -70.12, 126.61) 05/03/2025   15:18:44  ( -70.09, 126.59)    2.67                 3
 05/03/2025   16:09:26   (  69.75, -65.53) 05/03/2025   16:08:14  (  69.82, -66.15)   24.81                72
 05/06/2025   06:45:01   (  70.16,  74.99) 05/06/2025   06:45:41  (  70.16,  74.93)    2.15                40
 05/06/2025   07:35:43   ( -70.05,-117.53) 05/06/2025   07:35:11  ( -70.05,-117.58)    2.38                32
 05/08/2025   22:11:24   ( -70.72,  22.54) 05/08/2025   22:12:34  ( -70.63,  23.86)   49.81                70
 05/08/2025   23:01:59   (  70.15,-169.25) 05/08/2025   23:02:08  (  70.13,-169.22)    2.78                 9
 05/08/2025   23:52:41   ( -70.04,  -1.76) 05/08/2025   23:51:38  ( -70.03,  -1.74)    2.11                63