Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 4 4.  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)
 04/04/2025   06:45:16   (  70.13,  74.99) 04/04/2025   06:45:50  (  70.15,  74.96)    2.00                34
 04/04/2025   07:35:58   ( -70.02,-117.53) 04/04/2025   07:35:20  ( -70.04,-117.56)    2.19                38
 04/06/2025   22:11:37   ( -70.92,  22.20) 04/06/2025   22:12:45  ( -70.79,  24.13)   71.88                68
 04/06/2025   23:02:07   (  70.11,-169.19) 04/06/2025   23:02:23  (  70.09,-169.26)    3.52                16
 04/06/2025   23:52:50   ( -70.04,  -1.77) 04/06/2025   23:51:52  ( -70.04,  -1.70)    2.71                58
 04/09/2025   14:28:16   ( -70.27, 139.03) 04/09/2025   14:29:27  ( -70.24, 139.17)    6.81                71
 04/09/2025   15:18:58   (  70.09, -53.38) 04/09/2025   15:18:55  (  70.08, -53.42)    2.25                 3
 04/09/2025   16:09:39   ( -69.92, 114.20) 04/09/2025   16:08:25  ( -69.97, 114.07)    7.79                74
 04/12/2025   06:45:04   ( -70.17,-105.02) 04/12/2025   06:45:59  ( -70.17,-105.07)    1.87                55
 04/12/2025   07:35:47   (  70.04,  62.49) 04/12/2025   07:35:26  (  70.06,  62.42)    3.42                21
 04/12/2025   08:26:16   ( -69.23,-129.01) 04/12/2025   08:25:08  ( -69.30,-130.98)   78.17                68
 04/14/2025   23:01:55   ( -70.18,  10.75) 04/14/2025   23:02:31  ( -70.15,  10.77)    2.97                36
 04/14/2025   23:52:38   (  70.05, 178.25) 04/14/2025   23:51:58  (  70.04, 178.26)    1.57                40
 04/17/2025   14:28:15   (  70.91, -41.95) 04/17/2025   14:29:23  (  70.77, -40.08)   70.18                68
 04/17/2025   15:18:45   ( -70.15, 126.58) 04/17/2025   15:19:03  ( -70.13, 126.60)    2.57                18
 04/17/2025   16:09:28   (  70.03, -65.92) 04/17/2025   16:08:30  (  70.01, -65.91)    1.71                58