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: 4/13/2025
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 04/13/2025 04:45:38 -73.61, -81.39 115.34 04/13/2025 04:46:09 -73.61, -81.43 115.35 1.39 31
2 04/13/2025 05:36:22 73.55, 86.07 64.58 04/13/2025 05:35:29 73.55, 86.12 64.59 1.70 53
3 04/15/2025 15:07:16 73.67, -56.92 63.85 04/15/2025 15:08:06 73.63, -56.91 63.80 3.47 50
4 04/15/2025 15:57:59 -73.59, 110.57 116.26 04/15/2025 15:57:27 -73.59, 110.65 116.26 2.66 32
5 04/18/2025 01:28:52 -73.67, -32.33 117.02 04/18/2025 01:30:03 -73.69, -32.34 117.02 2.36 71
6 04/18/2025 02:19:36 73.61, 135.12 62.91 04/18/2025 02:19:23 73.61, 135.18 62.91 1.94 13
7 04/20/2025 11:50:42 74.34, -9.39 62.89 04/20/2025 11:51:48 74.24, -6.66 62.64 82.89 66
8 04/20/2025 12:41:12 -73.62, 159.70 117.93 04/20/2025 12:41:20 -73.63, 159.68 117.92 1.66 8
9 04/20/2025 13:31:54 73.46, -32.63 61.89 04/20/2025 13:30:41 73.50, -32.93 61.95 10.12 73
10 04/22/2025 23:02:49 73.66,-175.81 61.30 04/22/2025 23:03:14 73.66,-175.78 61.29 0.99 25
11 04/22/2025 23:53:32 -73.58, -8.30 118.81 04/22/2025 23:52:36 -73.59, -8.27 118.79 1.19 56
12 04/25/2025 09:24:25 -73.69,-151.27 119.48 04/25/2025 09:25:10 -73.67,-151.30 119.51 2.75 45
13 04/25/2025 10:15:08 73.59, 16.28 60.40 04/25/2025 10:14:29 73.62, 16.27 60.44 3.39 39

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 4/13/2025
SNOs_Map_NOAA-21_TERRA_20250413.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 04/13/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA