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: 4/23/2025
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 04/25/2025 09:24:31 -73.69,-151.31 119.48 04/25/2025 09:25:10 -73.69,-151.25 119.49 1.80 39
2 04/25/2025 10:15:15 73.62, 16.18 60.43 04/25/2025 10:14:30 73.60, 16.24 60.43 2.49 45
3 04/27/2025 19:46:16 73.71,-126.78 59.76 04/27/2025 19:47:03 73.72,-126.72 59.76 2.27 47
4 04/27/2025 20:36:59 -73.63, 40.71 120.34 04/27/2025 20:36:25 -73.65, 40.79 120.32 2.93 34
5 04/30/2025 06:08:00 -73.73,-102.26 120.98 04/30/2025 06:08:58 -73.73,-102.21 120.99 1.75 58
6 04/30/2025 06:58:44 73.65, 65.22 58.94 04/30/2025 06:58:18 73.63, 65.24 58.91 3.11 26
7 05/02/2025 16:29:43 73.71, -77.65 58.27 05/02/2025 16:30:49 73.73, -77.74 58.28 3.46 66
8 05/02/2025 17:20:27 -73.69, 89.72 121.77 05/02/2025 17:20:11 -73.67, 89.80 121.78 3.12 16
9 05/05/2025 02:51:30 -73.90, -53.53 122.23 05/05/2025 02:52:42 -73.80, -53.11 122.37 16.94 72
10 05/05/2025 03:42:11 73.67, 114.32 57.52 05/05/2025 03:42:02 73.67, 114.30 57.52 0.60 9
11 05/05/2025 04:32:42 -73.00, -76.86 123.23 05/05/2025 04:31:35 -73.04, -79.30 123.05 79.36 67
12 05/07/2025 13:13:19 74.14, -29.56 57.36 05/07/2025 13:14:28 74.02, -28.14 57.16 45.19 69
13 05/07/2025 14:03:55 -73.72, 138.77 123.11 05/07/2025 14:03:55 -73.72, 138.87 123.12 3.22 0

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 4/23/2025
SNOs_Map_NOAA-21_TERRA_20250424.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 04/23/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA