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: 5/15/2025
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 05/17/2025 07:30:48 -73.75,-123.02 125.50 05/17/2025 07:31:16 -73.77,-123.06 125.49 2.56 28
2 05/17/2025 08:21:33 73.69, 44.42 54.43 05/17/2025 08:20:35 73.68, 44.44 54.43 1.18 58
3 05/19/2025 17:52:33 73.79, -98.54 54.02 05/19/2025 17:53:04 73.76, -98.57 53.99 2.75 31
4 05/19/2025 18:43:15 -73.70, 68.99 126.09 05/19/2025 18:42:27 -73.67, 68.91 126.10 3.45 48
5 05/22/2025 04:14:14 -73.79, -73.99 126.47 05/22/2025 04:14:54 -73.79, -74.02 126.48 0.90 40
6 05/22/2025 05:04:58 73.69, 93.57 53.41 05/22/2025 05:04:13 73.70, 93.46 53.44 3.54 45
7 05/24/2025 14:35:58 73.79, -49.42 53.08 05/24/2025 14:36:41 73.79, -49.51 53.08 2.85 43
8 05/24/2025 15:26:41 -73.75, 118.00 126.97 05/24/2025 15:26:03 -73.76, 118.09 126.96 3.25 38
9 05/27/2025 00:57:41 -73.86, -25.00 127.27 05/27/2025 00:58:31 -73.84, -24.91 127.30 3.40 50
10 05/27/2025 01:48:25 73.75, 142.56 52.61 05/27/2025 01:47:50 73.74, 142.55 52.61 1.35 35

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 5/15/2025
SNOs_Map_NOAA-21_TERRA_20250515.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 05/15/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA