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: 6/21/2025
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 06/22/2025 18:56:41 74.59,-116.56 51.54 06/22/2025 18:57:47 74.49,-113.86 51.25 80.87 66
2 06/22/2025 19:47:11 -73.93, 52.44 129.22 06/22/2025 19:47:18 -73.93, 52.55 129.23 3.30 7
3 06/22/2025 20:37:52 73.66,-139.60 50.48 06/22/2025 20:36:40 73.73,-140.21 50.60 20.35 72
4 06/25/2025 06:08:54 73.92, 77.05 50.83 06/25/2025 06:09:02 73.91, 77.02 50.81 1.59 8
5 06/25/2025 06:59:36 -73.84,-115.45 129.26 06/25/2025 06:58:24 -73.82,-115.51 129.27 3.26 72
6 06/27/2025 16:30:35 -73.95, 101.56 129.05 06/27/2025 16:30:47 -73.93, 101.58 129.07 2.01 12
7 06/27/2025 17:21:19 73.84, -90.86 50.83 06/27/2025 17:20:07 73.84, -90.95 50.85 2.76 72
8 06/30/2025 02:52:17 73.95, 126.13 51.09 06/30/2025 02:52:29 73.94, 126.12 51.08 1.22 12
9 06/30/2025 03:42:59 -73.86, -66.34 129.01 06/30/2025 03:41:51 -73.84, -66.42 129.00 3.14 68
10 07/02/2025 13:13:58 -73.97, 150.66 128.71 07/02/2025 13:14:13 -73.98, 150.73 128.71 2.59 15
11 07/02/2025 14:04:42 73.87, -41.79 51.18 07/02/2025 14:03:33 73.89, -41.79 51.23 2.58 69
12 07/04/2025 23:35:41 73.99, 175.19 51.53 07/04/2025 23:35:56 73.97, 175.23 51.51 2.46 15

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 6/21/2025
SNOs_Map_NOAA-21_TERRA_20250621.jpg

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

Historial Predications of SNOs between NOAA-21 and TERRA