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: 7/14/2025
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 07/14/2025 17:02:27 74.00, -86.53 52.79 07/14/2025 17:02:47 74.01, -86.59 52.79 1.99 20
2 07/14/2025 17:53:10 -73.95, 80.91 127.27 07/14/2025 17:52:08 -73.93, 80.91 127.27 2.31 62
3 07/17/2025 03:24:07 -74.03, -62.02 126.78 07/17/2025 03:24:28 -74.04, -61.99 126.78 1.82 21
4 07/17/2025 04:14:51 73.94, 105.50 53.13 07/17/2025 04:13:49 73.93, 105.44 53.14 2.24 62
5 07/19/2025 13:45:49 74.03, -37.44 53.66 07/19/2025 13:46:10 74.03, -37.49 53.66 1.48 21
6 07/19/2025 14:36:32 -73.97, 130.03 126.41 07/19/2025 14:35:31 -73.96, 130.01 126.41 1.03 61
7 07/22/2025 00:07:30 -74.05, -12.91 125.86 07/22/2025 00:07:52 -74.05, -12.93 125.87 0.53 22
8 07/22/2025 00:58:14 73.97, 154.58 54.07 07/22/2025 00:57:12 73.99, 154.60 54.09 1.29 62
9 07/24/2025 10:29:12 74.07, 11.62 54.67 07/24/2025 10:29:33 74.06, 11.63 54.65 0.69 21
10 07/24/2025 11:19:55 -73.99, 179.12 125.41 07/24/2025 11:18:54 -73.99, 179.14 125.40 0.75 61
11 07/26/2025 20:50:53 -74.08, 36.16 124.79 07/26/2025 20:51:15 -74.06, 36.15 124.82 2.47 22

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 7/14/2025
SNOs_Map_NOAA-21_TERRA_20250714.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 07/14/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA