Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-21 and TERRA Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 4/19/2025
Index Date (NOAA-21) Time (NOAA-21) Lat,Lon (NOAA-21) SZA (NOAA-21 ) Date (TERRA) Time (TERRA) Lat,Lon (TERRA) SZA (TERRA ) Distance(km) Time Diff (sec)
1 04/20/2025 11:50:42 74.34, -9.38 62.89 04/20/2025 11:51:48 74.25, -6.63 62.65 83.03 66
2 04/20/2025 12:41:12 -73.62, 159.69 117.93 04/20/2025 12:41:20 -73.64, 159.69 117.92 1.86 8
3 04/20/2025 13:31:54 73.46, -32.62 61.88 04/20/2025 13:30:41 73.51, -32.91 61.96 10.66 73
4 04/22/2025 23:02:49 73.65,-175.79 61.29 04/22/2025 23:03:15 73.64,-175.83 61.27 2.01 26
5 04/22/2025 23:53:32 -73.58, -8.30 118.81 04/22/2025 23:52:37 -73.56, -8.34 118.82 2.81 55
6 04/25/2025 09:24:25 -73.68,-151.25 119.49 04/25/2025 09:25:11 -73.66,-151.32 119.52 3.16 46
7 04/25/2025 10:15:09 73.62, 16.20 60.44 04/25/2025 10:14:30 73.62, 16.27 60.44 2.01 39
8 04/27/2025 19:46:02 73.73,-126.78 59.79 04/27/2025 19:47:03 73.73,-126.69 59.77 2.75 61
9 04/27/2025 20:36:44 -73.61, 40.83 120.36 04/27/2025 20:36:26 -73.61, 40.72 120.35 3.51 18
10 04/30/2025 06:07:43 -74.07,-103.00 120.59 04/30/2025 06:08:53 -73.96,-101.73 120.79 41.02 70
11 04/30/2025 06:58:20 73.67, 65.29 58.95 04/30/2025 06:58:16 73.69, 65.37 58.97 3.26 4
12 04/30/2025 07:48:55 -73.20,-126.32 121.58 04/30/2025 07:47:45 -73.26,-127.84 121.42 49.39 70
13 05/02/2025 17:19:55 -73.68, 89.88 121.78 05/02/2025 17:20:11 -73.68, 89.83 121.78 1.67 16

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 4/19/2025
SNOs_Map_NOAA-21_TERRA_20250419.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 04/19/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA