Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 3 27.  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)
 03/27/2025   06:45:24   ( -70.13,-105.03) 03/27/2025   06:45:55  ( -70.11,-105.09)    2.79                31
 03/27/2025   07:36:08   (  70.03,  62.43) 03/27/2025   07:35:22  (  70.01,  62.41)    2.19                46
 03/29/2025   22:11:39   (  70.48,-157.11) 03/29/2025   22:12:50  (  70.36,-156.49)   26.60                71
 03/29/2025   23:02:16   ( -70.10,  10.79) 03/29/2025   23:02:23  ( -70.09,  10.75)    2.48                 7
 03/29/2025   23:52:59   (  69.96, 178.32) 03/29/2025   23:51:50  (  69.98, 178.24)    3.56                69
 04/01/2025   14:28:25   (  70.16, -40.84) 04/01/2025   14:29:20  (  70.15, -40.91)    3.22                55
 04/01/2025   15:19:08   ( -70.10, 126.57) 04/01/2025   15:18:49  ( -70.09, 126.65)    2.88                19
 04/01/2025   16:09:37   (  69.22, -64.82) 04/01/2025   16:08:29  (  69.26, -66.84)   79.72                68
 04/04/2025   06:45:16   (  70.13,  74.99) 04/04/2025   06:45:45  (  70.14,  74.97)    1.15                29
 04/04/2025   07:35:58   ( -70.01,-117.51) 04/04/2025   07:35:15  ( -70.03,-117.55)    2.61                43
 04/06/2025   22:11:27   ( -70.46,  22.96) 04/06/2025   22:12:38  ( -70.39,  23.58)   24.35                71
 04/06/2025   23:02:06   (  70.12,-169.20) 04/06/2025   23:02:08  (  70.10,-169.18)    1.88                 2
 04/06/2025   23:52:48   ( -69.99,  -1.70) 04/06/2025   23:51:38  ( -70.00,  -1.70)    0.59                70
 04/09/2025   14:28:13   ( -70.20, 139.16) 04/09/2025   14:29:04  ( -70.18, 139.18)    2.28                51
 04/09/2025   15:18:56   (  70.07, -53.34) 04/09/2025   15:18:31  (  70.06, -53.35)    2.04                25