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: 7/15/2025
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 07/17/2025 03:24:07 -74.01, -61.96 126.81 07/17/2025 03:24:29 -74.01, -62.06 126.80 3.06 22
2 07/17/2025 04:14:52 73.97, 105.44 53.16 07/17/2025 04:13:49 73.96, 105.49 53.16 1.73 63
3 07/19/2025 13:45:50 74.05, -37.50 53.68 07/19/2025 13:46:10 74.05, -37.44 53.67 1.85 20
4 07/19/2025 14:36:33 -73.99, 129.96 126.38 07/19/2025 14:35:31 -73.98, 130.06 126.39 3.33 62
5 07/22/2025 00:07:31 -74.08, -12.98 125.83 07/22/2025 00:07:52 -74.06, -12.90 125.85 2.75 21
6 07/22/2025 00:58:15 74.00, 154.52 54.10 07/22/2025 00:57:12 74.00, 154.64 54.11 3.50 63
7 07/24/2025 10:29:12 74.04, 11.68 54.64 07/24/2025 10:29:33 74.07, 11.65 54.66 3.38 21
8 07/24/2025 11:19:54 -73.97, 179.18 125.44 07/24/2025 11:18:53 -74.00, 179.16 125.39 3.48 61
9 07/26/2025 20:50:52 -74.06, 36.23 124.82 07/26/2025 20:51:14 -74.06, 36.16 124.82 2.19 22

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 7/15/2025
SNOs_Map_NOAA-21_TERRA_20250715.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 07/15/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA