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: 6/18/2025
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 06/20/2025 08:34:57 -74.57,-141.08 128.51 06/20/2025 08:36:03 -74.49,-138.38 128.78 80.51 66
2 06/20/2025 09:25:30 73.92, 27.91 50.75 06/20/2025 09:25:32 73.92, 28.01 50.74 3.11 2
3 06/20/2025 10:16:09 -73.70,-164.25 129.50 06/20/2025 10:14:56 -73.73,-164.72 129.42 15.35 73
4 06/22/2025 18:56:40 74.56,-116.47 51.50 06/22/2025 18:57:47 74.47,-113.91 51.23 76.77 67
5 06/22/2025 19:47:10 -73.90, 52.54 129.26 06/22/2025 19:47:18 -73.92, 52.52 129.25 2.35 8
6 06/22/2025 20:37:52 73.68,-139.64 50.50 06/22/2025 20:36:40 73.71,-140.25 50.58 19.52 72
7 06/25/2025 06:08:54 73.94, 77.01 50.84 06/25/2025 06:09:01 73.93, 77.07 50.83 2.06 7
8 06/25/2025 06:59:36 -73.86,-115.48 129.25 06/25/2025 06:58:23 -73.85,-115.45 129.24 1.41 73
9 06/27/2025 16:30:35 -73.96, 101.52 129.03 06/27/2025 16:30:46 -73.95, 101.62 129.06 3.49 11
10 06/27/2025 17:21:19 73.86, -90.91 50.85 06/27/2025 17:20:06 73.85, -90.92 50.87 0.81 73
11 06/30/2025 02:52:17 73.92, 126.19 51.06 06/30/2025 02:52:29 73.94, 126.12 51.08 2.72 12

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 6/18/2025
SNOs_Map_NOAA-21_TERRA_20250618.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 06/18/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA