Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-21 and NOAA-19 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 5/2/2025
Index Date (NOAA-21) Time (NOAA-21) Lat,Lon (NOAA-21) SZA (NOAA-21 ) Date (NOAA-19) Time (NOAA-19) Lat,Lon (NOAA-19) SZA (NOAA-19 ) Distance(km) Time Diff (sec)
1 05/14/2025 13:31:24 -70.88, 152.29 127.95 05/14/2025 13:30:13 -70.86, 151.01 127.92 46.63 71
2 05/14/2025 14:22:15 71.14, -40.84 52.32 05/14/2025 14:21:01 71.18, -41.15 52.38 12.10 74
3 05/14/2025 15:13:01 -71.24, 126.30 127.58 05/14/2025 15:12:02 -71.24, 126.21 127.57 3.16 59
4 05/14/2025 16:03:47 71.30, -66.49 52.47 05/14/2025 16:02:54 71.31, -66.41 52.48 3.14 53
5 05/14/2025 16:54:31 -71.30, 100.83 127.54 05/14/2025 16:53:56 -71.32, 100.86 127.52 3.04 35
6 05/14/2025 17:45:17 71.30, -91.86 52.45 05/14/2025 17:44:51 71.28, -91.94 52.44 3.14 26
7 05/14/2025 18:36:02 -71.35, 75.36 127.50 05/14/2025 18:35:52 -71.35, 75.43 127.51 2.40 10
8 05/14/2025 19:26:48 71.35,-117.33 52.49 05/14/2025 19:26:46 71.36,-117.28 52.50 2.05 2
9 05/14/2025 20:17:32 -71.35, 49.98 127.52 05/14/2025 20:17:48 -71.37, 49.99 127.50 2.56 16
10 05/14/2025 21:08:18 71.35,-142.71 52.48 05/14/2025 21:08:42 71.38,-142.72 52.51 3.53 24
11 05/14/2025 21:59:03 -71.41, 24.51 127.48 05/14/2025 21:59:44 -71.40, 24.56 127.49 1.54 41
12 05/14/2025 22:49:49 71.41,-168.18 52.52 05/14/2025 22:50:38 71.41,-168.15 52.51 0.99 49
13 05/14/2025 23:40:33 -71.41, -0.86 127.50 05/14/2025 23:41:40 -71.43, -0.88 127.48 2.38 67
14 05/15/2025 00:31:20 71.46, 166.35 52.56 05/15/2025 00:32:34 71.44, 166.41 52.52 3.34 74
15 05/15/2025 01:22:16 -72.08, -27.47 126.80 05/15/2025 01:23:24 -72.06, -25.15 126.90 79.28 68

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 5/2/2025
SNOs_Map_NOAA-21_NOAA-19_20250502.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 05/02/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and NOAA-19