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: 4/17/2025
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 04/18/2025 01:28:52 -73.69, -32.37 117.00 04/18/2025 01:30:03 -73.67, -32.38 117.04 2.25 71
2 04/18/2025 02:19:35 73.57, 135.20 62.87 04/18/2025 02:19:23 73.60, 135.14 62.90 3.27 12
3 04/20/2025 11:50:42 74.35, -9.42 62.91 04/20/2025 11:51:48 74.23, -6.69 62.63 83.34 66
4 04/20/2025 12:41:12 -73.64, 159.65 117.91 04/20/2025 12:41:20 -73.61, 159.64 117.94 2.67 8
5 04/20/2025 13:31:53 73.43, -32.55 61.85 04/20/2025 13:30:41 73.48, -32.96 61.94 14.44 72
6 04/22/2025 23:02:49 73.67,-175.84 61.31 04/22/2025 23:03:14 73.65,-175.81 61.28 2.85 25
7 04/22/2025 23:53:32 -73.60, -8.34 118.79 04/22/2025 23:52:36 -73.57, -8.31 118.81 3.35 56
8 04/25/2025 09:24:25 -73.71,-151.31 119.46 04/25/2025 09:25:09 -73.70,-151.22 119.48 2.65 44
9 04/25/2025 10:15:08 73.60, 16.26 60.41 04/25/2025 10:14:29 73.61, 16.25 60.43 1.09 39
10 04/27/2025 19:46:01 73.72,-126.73 59.77 04/27/2025 19:47:02 73.69,-126.77 59.73 2.89 61
11 04/27/2025 20:36:44 -73.64, 40.76 120.33 04/27/2025 20:36:24 -73.63, 40.76 120.34 1.26 20
12 04/30/2025 06:07:42 -74.01,-102.85 120.66 04/30/2025 06:08:53 -73.89,-101.87 120.85 33.03 71
13 04/30/2025 06:58:20 73.66, 65.32 58.94 04/30/2025 06:58:15 73.67, 65.34 58.95 1.14 5

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 4/17/2025
SNOs_Map_NOAA-21_TERRA_20250417.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 04/17/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA