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: 11/4/2025
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 11/05/2025 20:37:04 -74.54, 38.48 89.46 11/05/2025 20:37:57 -74.55, 38.36 89.45 3.49 53
2 11/05/2025 21:27:49 74.49,-154.08 90.50 11/05/2025 21:27:17 74.48,-154.13 90.50 2.03 32
3 11/08/2025 06:58:41 74.54, 63.07 91.27 11/08/2025 06:59:17 74.55, 62.99 91.27 2.64 36
4 11/08/2025 07:49:24 -74.50,-129.51 88.77 11/08/2025 07:48:37 -74.51,-129.45 88.76 1.99 47
5 11/10/2025 17:20:16 -74.56, 87.64 88.03 11/10/2025 17:20:37 -74.56, 87.63 88.03 0.65 21
6 11/10/2025 18:11:00 74.47,-104.82 91.89 11/10/2025 18:09:57 74.49,-104.87 91.92 2.88 63
7 11/13/2025 02:51:21 -75.24, -56.99 86.63 11/13/2025 02:52:27 -75.11, -54.08 86.87 83.87 66
8 11/13/2025 03:41:53 74.58, 112.17 92.66 11/13/2025 03:41:56 74.57, 112.27 92.65 2.96 3
9 11/13/2025 04:32:31 -74.29, -79.74 87.65 11/13/2025 04:31:19 -74.38, -80.52 87.52 25.35 72
10 11/15/2025 13:12:45 74.65, -30.72 93.36 11/15/2025 13:13:55 74.64, -30.64 93.33 3.02 70
11 11/15/2025 14:03:27 -74.55, 136.88 86.75 11/15/2025 14:03:16 -74.55, 136.82 86.75 1.64 11
12 11/17/2025 23:34:19 -74.61, -6.01 86.08 11/17/2025 23:35:14 -74.64, -6.00 86.07 3.17 55
13 11/18/2025 00:25:03 74.54, 161.49 93.85 11/18/2025 00:24:34 74.56, 161.47 93.87 1.84 29

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 11/4/2025
SNOs_Map_NOAA-21_TERRA_20251105.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 11/04/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA