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: 6/19/2025
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 -74.58,-141.09 128.50 06/20/2025 08:36:03 -74.49,-138.39 128.78 80.63 66
2 06/20/2025 09:25:30 73.92, 27.90 50.75 06/20/2025 09:25:32 73.92, 28.00 50.74 3.14 2
3 06/20/2025 10:16:08 -73.65,-164.14 129.56 06/20/2025 10:14:56 -73.73,-164.73 129.42 20.42 72
4 06/22/2025 18:56:40 74.56,-116.48 51.50 06/22/2025 18:57:47 74.47,-113.91 51.23 76.92 67
5 06/22/2025 19:47:10 -73.90, 52.53 129.26 06/22/2025 19:47:18 -73.92, 52.51 129.25 1.86 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 19.36 72
7 06/25/2025 06:08:54 73.94, 77.01 50.85 06/25/2025 06:09:01 73.94, 77.08 50.84 2.30 7
8 06/25/2025 06:59:36 -73.86,-115.48 129.25 06/25/2025 06:58:23 -73.85,-115.44 129.24 1.61 73
9 06/27/2025 16:30:35 -73.96, 101.52 129.03 06/27/2025 16:30:46 -73.95, 101.63 129.05 3.62 11
10 06/27/2025 17:21:19 73.86, -90.91 50.85 06/27/2025 17:20:06 73.86, -90.90 50.87 0.30 73
11 06/30/2025 02:52:18 73.97, 126.08 51.12 06/30/2025 02:52:29 73.95, 126.15 51.09 3.09 11
12 06/30/2025 03:43:00 -73.88, -66.39 128.99 06/30/2025 03:41:51 -73.86, -66.39 128.99 2.51 69
13 07/02/2025 13:13:58 -73.94, 150.72 128.74 07/02/2025 13:14:14 -73.93, 150.63 128.75 3.18 16

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 6/19/2025
SNOs_Map_NOAA-21_TERRA_20250619.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 06/19/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA