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: 7/6/2025
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 07/07/2025 09:57:22 -74.00,-160.25 128.21 07/07/2025 09:57:40 -73.99,-160.22 128.23 1.46 18
2 07/07/2025 10:48:05 73.89, 7.32 51.68 07/07/2025 10:46:59 73.92, 7.31 51.73 3.12 66
3 07/09/2025 20:19:04 74.02,-135.73 52.11 07/09/2025 20:19:21 74.02,-135.63 52.10 3.07 17
4 07/09/2025 21:09:46 -73.92, 31.82 128.00 07/09/2025 21:08:43 -73.90, 31.78 128.00 3.25 63
5 07/12/2025 06:40:44 -73.99,-111.09 127.59 07/12/2025 06:41:05 -73.98,-111.19 127.61 3.47 21
6 07/12/2025 07:31:28 73.90, 56.45 52.31 07/12/2025 07:30:25 73.91, 56.34 52.35 3.44 63
7 07/14/2025 17:02:27 74.03, -86.61 52.82 07/14/2025 17:02:46 74.03, -86.54 52.81 2.19 19
8 07/14/2025 17:53:09 -73.92, 80.97 127.30 07/14/2025 17:52:08 -73.91, 80.87 127.29 3.48 61
9 07/17/2025 03:24:08 -74.05, -62.07 126.76 07/17/2025 03:24:29 -74.02, -62.04 126.80 3.38 21
10 07/17/2025 04:14:52 73.97, 105.43 53.16 07/17/2025 04:13:49 73.95, 105.48 53.16 2.62 63
11 07/19/2025 13:45:50 74.06, -37.52 53.69 07/19/2025 13:46:10 74.05, -37.45 53.67 2.30 20

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 7/6/2025
SNOs_Map_NOAA-21_TERRA_20250706.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 07/06/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA