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: 7/10/2025
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 07/12/2025 06:40:45 -74.02,-111.16 127.56 07/12/2025 06:41:05 -74.00,-111.15 127.59 2.86 20
2 07/12/2025 07:31:29 73.93, 56.38 52.34 07/12/2025 07:30:25 73.94, 56.39 52.37 1.13 64
3 07/14/2025 17:02:27 74.01, -86.55 52.79 07/14/2025 17:02:47 74.01, -86.59 52.79 1.51 20
4 07/14/2025 17:53:10 -73.95, 80.90 127.27 07/14/2025 17:52:08 -73.93, 80.91 127.27 1.98 62
5 07/17/2025 03:24:08 -74.03, -62.02 126.79 07/17/2025 03:24:29 -74.05, -61.99 126.78 2.41 21
6 07/17/2025 04:14:51 73.94, 105.50 53.13 07/17/2025 04:13:49 73.93, 105.43 53.14 2.42 62
7 07/19/2025 13:45:49 74.03, -37.44 53.65 07/19/2025 13:46:10 74.03, -37.49 53.65 1.56 21
8 07/19/2025 14:36:32 -73.96, 130.04 126.42 07/19/2025 14:35:31 -73.96, 130.02 126.40 0.53 61
9 07/22/2025 00:07:30 -74.04, -12.89 125.87 07/22/2025 00:07:52 -74.05, -12.93 125.86 1.45 22

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 7/10/2025
SNOs_Map_NOAA-21_TERRA_20250710.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 07/10/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA