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: 11/15/2025
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 11/17/2025 22:44:35 74.97,-174.56 94.31 11/17/2025 22:45:45 74.85,-173.15 94.12 43.01 70
2 11/17/2025 23:35:11 -74.58, -6.16 86.12 11/17/2025 23:35:09 -74.60, -6.09 86.11 2.51 2
3 11/18/2025 00:25:45 74.00, 162.65 93.26 11/18/2025 00:24:38 74.06, 160.34 93.42 70.95 67
4 11/20/2025 09:06:13 -74.65,-149.10 85.48 11/20/2025 09:07:05 -74.66,-148.98 85.49 3.70 52
5 11/20/2025 09:56:57 74.57, 18.45 94.43 11/20/2025 09:56:25 74.59, 18.51 94.46 2.94 32
6 11/22/2025 19:27:58 74.60,-124.39 95.00 11/22/2025 19:28:21 74.61,-124.48 95.00 2.56 23
7 11/22/2025 20:18:41 -74.54, 43.10 85.07 11/22/2025 20:17:41 -74.57, 43.10 85.03 3.43 60
8 11/25/2025 04:59:03 74.84, 92.21 95.75 11/25/2025 05:00:14 74.74, 92.81 95.62 20.80 71
9 11/25/2025 05:49:43 -74.62, -99.89 84.48 11/25/2025 05:49:36 -74.60, -99.85 84.51 2.52 7
10 11/27/2025 15:20:44 -74.67, 117.24 83.98 11/27/2025 15:21:30 -74.65, 117.24 84.01 2.27 46
11 11/27/2025 16:11:28 74.60, -75.26 95.96 11/27/2025 16:10:49 74.61, -75.20 95.96 2.03 39

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 11/15/2025
SNOs_Map_NOAA-21_TERRA_20251116.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 11/15/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA