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: 5/3/2025
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 05/05/2025 02:51:30 -73.88, -53.50 122.24 05/05/2025 02:52:41 -73.83, -53.05 122.34 15.22 71
2 05/05/2025 03:42:11 73.65, 114.37 57.49 05/05/2025 03:42:02 73.66, 114.27 57.51 3.41 9
3 05/05/2025 04:32:42 -72.99, -76.84 123.25 05/05/2025 04:31:35 -73.02, -79.35 123.07 81.83 67
4 05/07/2025 13:13:18 74.07, -29.38 57.29 05/07/2025 13:14:28 74.00, -28.19 57.14 37.34 70
5 05/07/2025 14:03:55 -73.71, 138.80 123.13 05/07/2025 14:03:55 -73.68, 138.80 123.16 3.25 0
6 05/07/2025 14:54:30 73.17, -52.67 56.28 05/07/2025 14:53:21 73.24, -54.43 56.45 56.92 69
7 05/09/2025 23:35:07 -74.43, -5.73 122.96 05/09/2025 23:36:13 -74.36, -2.90 123.19 85.20 66
8 05/10/2025 00:25:38 73.70, 163.38 56.22 05/10/2025 00:25:43 73.70, 163.34 56.22 1.06 5
9 05/10/2025 01:16:19 -73.55, -28.94 123.97 05/10/2025 01:15:06 -73.61, -29.20 123.88 10.65 73
10 05/12/2025 10:47:21 -73.73,-172.12 124.37 05/12/2025 10:47:35 -73.73,-172.12 124.38 0.60 14
11 05/12/2025 11:38:05 73.64, -4.60 55.53 05/12/2025 11:36:54 73.64, -4.62 55.54 0.78 71
12 05/14/2025 21:09:05 73.74,-147.57 55.05 05/14/2025 21:09:23 73.72,-147.63 55.03 2.48 18

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 5/3/2025
SNOs_Map_NOAA-21_TERRA_20250503.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 05/03/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA