Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 2 20.  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)
 02/20/2025   14:28:35   ( -70.17, 139.17) 02/20/2025   14:29:43  ( -70.17, 139.10)    2.38                68
 02/20/2025   15:19:20   (  70.07, -53.38) 02/20/2025   15:19:10  (  70.07, -53.40)    0.67                10
 02/20/2025   16:09:56   ( -69.70, 114.50) 02/20/2025   16:08:44  ( -69.74, 113.77)   28.49                72
 02/23/2025   06:45:31   ( -70.14,-105.02) 02/23/2025   06:46:11  ( -70.12,-105.08)    2.72                40
 02/23/2025   07:36:16   (  70.04,  62.43) 02/23/2025   07:35:38  (  70.02,  62.41)    2.88                38
 02/25/2025   22:11:52   (  70.55,-157.23) 02/25/2025   22:13:03  (  70.46,-156.34)   34.53                71
 02/25/2025   23:02:27   ( -70.11,  10.78) 02/25/2025   23:02:37  ( -70.13,  10.82)    2.39                10
 02/25/2025   23:53:11   (  69.97, 178.29) 02/25/2025   23:52:05  (  69.97, 178.23)    2.71                66
 02/28/2025   14:28:40   (  70.18, -40.88) 02/28/2025   14:29:32  (  70.19, -40.83)    2.33                52
 02/28/2025   15:19:21   ( -70.05, 126.63) 02/28/2025   15:19:02  ( -70.09, 126.65)    3.51                19
 02/28/2025   16:09:50   (  69.12, -64.71) 02/28/2025   16:08:43  (  69.20, -66.92)   87.81                67
 03/03/2025   06:45:35   (  70.14,  74.95) 03/03/2025   06:45:57  (  70.15,  75.00)    2.29                22
 03/03/2025   07:36:16   ( -70.01,-117.53) 03/03/2025   07:35:28  ( -69.99,-117.60)    3.23                48
 03/05/2025   22:11:45   ( -70.18,  23.34) 03/05/2025   22:12:55  ( -70.17,  23.29)    2.32                70
 03/05/2025   23:02:29   (  70.06,-169.17) 03/05/2025   23:02:22  (  70.05,-169.24)    2.77                 7
 03/05/2025   23:53:07   ( -69.76,  -1.40) 03/05/2025   23:51:54  ( -69.84,  -1.90)   20.89                73