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: 5/20/2025
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 05/22/2025 04:14:15 -73.81, -74.02 126.45 05/22/2025 04:14:54 -73.82, -73.95 126.45 2.90 39
2 05/22/2025 05:05:00 73.75, 93.43 53.48 05/22/2025 05:04:13 73.74, 93.54 53.47 3.64 47
3 05/24/2025 14:35:58 73.80, -49.44 53.09 05/24/2025 14:36:40 73.83, -49.43 53.11 3.18 42
4 05/24/2025 15:26:40 -73.72, 118.08 127.01 05/24/2025 15:26:03 -73.74, 118.05 126.98 3.13 37
5 05/27/2025 00:57:40 -73.83, -24.92 127.30 05/27/2025 00:58:31 -73.82, -24.96 127.32 1.30 51
6 05/27/2025 01:48:25 73.76, 142.54 52.63 05/27/2025 01:47:49 73.78, 142.63 52.64 3.32 36
7 05/29/2025 11:19:24 73.83, -0.36 52.32 05/29/2025 11:20:17 73.83, -0.42 52.32 1.97 53
8 05/29/2025 12:10:06 -73.74, 167.16 127.78 05/29/2025 12:09:40 -73.75, 167.07 127.76 3.12 26
9 05/31/2025 21:41:06 -73.86, 24.14 127.99 05/31/2025 21:42:07 -73.84, 24.10 128.02 2.28 61
10 05/31/2025 22:31:51 73.80,-168.41 51.94 05/31/2025 22:31:25 73.80,-168.32 51.94 2.57 26

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 5/20/2025
SNOs_Map_NOAA-21_TERRA_20250520.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 05/20/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA