Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 3 31.  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)
 04/01/2025   14:28:25   (  70.16, -40.84) 04/01/2025   14:29:20  (  70.19, -40.85)    3.31                55
 04/01/2025   15:19:07   ( -70.05, 126.65) 04/01/2025   15:18:50  ( -70.08, 126.62)    3.11                17
 04/01/2025   16:09:37   (  69.22, -64.82) 04/01/2025   16:08:30  (  69.25, -66.86)   80.48                67
 04/04/2025   06:45:16   (  70.11,  75.02) 04/04/2025   06:45:47  (  70.14,  74.96)    3.30                31
 04/04/2025   07:35:59   ( -70.05,-117.57) 04/04/2025   07:35:17  ( -70.02,-117.57)    3.00                42
 04/06/2025   22:11:31   ( -70.58,  22.76) 04/06/2025   22:12:42  ( -70.42,  23.61)   36.27                71
 04/06/2025   23:02:07   (  70.08,-169.15) 04/06/2025   23:02:13  (  70.09,-169.22)    2.94                 6
 04/06/2025   23:52:50   ( -70.01,  -1.73) 04/06/2025   23:51:42  ( -70.03,  -1.66)    3.55                68
 04/09/2025   14:28:14   ( -70.19, 139.17) 04/09/2025   14:29:10  ( -70.17, 139.14)    2.31                56
 04/09/2025   15:18:57   (  70.06, -53.33) 04/09/2025   15:18:37  (  70.05, -53.38)    2.05                20
 04/09/2025   16:09:27   ( -69.30, 115.10) 04/09/2025   16:08:18  ( -69.34, 113.28)   71.67                69
 04/12/2025   06:45:04   ( -70.12,-104.95) 04/12/2025   06:45:34  ( -70.14,-105.00)    3.10                30
 04/12/2025   07:35:48   (  70.05,  62.47) 04/12/2025   07:35:01  (  70.02,  62.48)    2.92                47