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: 5/23/2025
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 05/24/2025 14:35:59 73.82, -49.49 53.12 05/24/2025 14:36:41 73.81, -49.47 53.09 1.69 42
2 05/24/2025 15:26:41 -73.74, 118.02 126.99 05/24/2025 15:26:04 -73.72, 117.99 127.00 2.85 37
3 05/27/2025 00:57:41 -73.85, -24.97 127.28 05/27/2025 00:58:31 -73.85, -24.89 127.29 2.73 50
4 05/27/2025 01:48:25 73.73, 142.61 52.59 05/27/2025 01:47:50 73.76, 142.60 52.63 3.20 35
5 05/29/2025 11:19:25 73.84, -0.40 52.34 05/29/2025 11:20:18 73.83, -0.43 52.31 2.19 53
6 05/29/2025 12:10:07 -73.76, 167.11 127.76 05/29/2025 12:09:41 -73.74, 167.04 127.77 3.30 26
7 05/31/2025 21:41:07 -73.88, 24.10 127.97 05/31/2025 21:42:08 -73.84, 24.09 128.02 3.58 61
8 05/31/2025 22:31:51 73.76,-168.32 51.90 05/31/2025 22:31:27 73.75,-168.43 51.90 3.79 24
9 06/03/2025 08:02:50 73.88, 48.66 51.73 06/03/2025 08:03:52 73.89, 48.70 51.72 1.58 62
10 06/03/2025 08:53:32 -73.80,-143.83 128.37 06/03/2025 08:53:15 -73.80,-143.82 128.36 0.60 17
11 06/05/2025 18:24:31 -73.87, 73.26 128.55 06/05/2025 18:25:42 -73.87, 73.16 128.56 3.13 71
12 06/05/2025 19:15:16 73.81,-119.28 51.38 06/05/2025 19:15:00 73.83,-119.25 51.40 2.92 16

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 5/23/2025
SNOs_Map_NOAA-21_TERRA_20250523.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 05/23/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA