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: 8/10/2025
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 08/12/2025 21:22:38 74.12,-151.87 59.77 08/12/2025 21:22:48 74.15,-151.90 59.79 2.97 10
2 08/12/2025 22:13:21 -74.04, 15.64 120.32 08/12/2025 22:12:10 -74.04, 15.53 120.29 3.45 71
3 08/15/2025 06:53:50 74.93, 63.26 61.42 08/15/2025 06:54:54 74.82, 66.56 61.09 96.38 64
4 08/15/2025 07:44:19 -74.16,-127.39 119.45 08/15/2025 07:44:27 -74.15,-127.34 119.46 1.89 8
5 08/15/2025 08:35:00 73.96, 40.43 60.33 08/15/2025 08:33:48 74.01, 40.00 60.43 14.23 72
6 08/17/2025 17:15:28 -74.82, 88.13 117.94 08/17/2025 17:16:35 -74.72, 90.84 118.24 79.82 67
7 08/17/2025 18:05:59 74.14,-102.74 61.29 08/17/2025 18:06:04 74.15,-102.81 61.30 2.42 5
8 08/17/2025 18:56:40 -73.95, 65.02 118.91 08/17/2025 18:55:27 -74.01, 64.54 118.81 15.93 73
9 08/20/2025 03:37:05 74.71, 113.03 62.71 08/20/2025 03:38:13 74.58, 115.06 62.44 61.34 68
10 08/20/2025 04:27:39 -74.18, -78.28 117.88 08/20/2025 04:27:41 -74.19, -78.18 117.88 2.95 2
11 08/20/2025 05:18:16 73.78, 90.02 61.68 08/20/2025 05:17:06 73.81, 88.67 61.82 41.98 70
12 08/22/2025 13:58:43 -74.61, 137.89 116.61 08/22/2025 13:59:53 -74.51, 139.43 116.82 47.06 70
13 08/22/2025 14:49:19 74.17, -53.65 62.91 08/22/2025 14:49:17 74.18, -53.65 62.92 1.32 2

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 8/10/2025
SNOs_Map_NOAA-21_TERRA_20250810.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 08/10/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA