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: 7/7/2025
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 09:57:21 -73.98,-160.21 128.23 07/07/2025 09:57:39 -74.00,-160.19 128.22 2.26 18
2 07/07/2025 10:48:06 73.93, 7.23 51.72 07/07/2025 10:46:59 73.94, 7.34 51.74 3.61 67
3 07/09/2025 20:19:04 74.00,-135.69 52.09 07/09/2025 20:19:22 73.98,-135.70 52.07 2.14 18
4 07/09/2025 21:09:46 -73.91, 31.86 128.01 07/09/2025 21:08:43 -73.91, 31.81 127.99 1.57 63
5 07/12/2025 06:40:45 -74.03,-111.17 127.55 07/12/2025 06:41:05 -74.00,-111.15 127.59 3.39 20
6 07/12/2025 07:31:29 73.93, 56.37 52.35 07/12/2025 07:30:25 73.93, 56.38 52.37 0.61 64
7 07/14/2025 17:02:27 74.02, -86.57 52.80 07/14/2025 17:02:47 74.01, -86.60 52.79 1.52 20
8 07/14/2025 17:53:10 -73.96, 80.89 127.26 07/14/2025 17:52:08 -73.94, 80.91 127.27 2.53 62
9 07/17/2025 03:24:08 -74.03, -62.03 126.78 07/17/2025 03:24:29 -74.05, -61.98 126.77 2.28 21
10 07/17/2025 04:14:52 73.95, 105.47 53.14 07/17/2025 04:13:50 73.93, 105.43 53.14 3.08 62
11 07/19/2025 13:45:50 74.04, -37.47 53.67 07/19/2025 13:46:11 74.03, -37.50 53.65 1.38 21

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 7/7/2025
SNOs_Map_NOAA-21_TERRA_20250707.jpg

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

Historial Predications of SNOs between NOAA-21 and TERRA