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: 5/9/2025
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 -70.90, 152.26 127.93 05/14/2025 13:30:12 -70.91, 151.09 127.87 42.59 72
2 05/14/2025 14:22:15 71.15, -40.86 52.33 05/14/2025 14:21:01 71.18, -41.16 52.38 11.11 74
3 05/14/2025 15:13:01 -71.26, 126.26 127.56 05/14/2025 15:12:01 -71.29, 126.29 127.53 3.21 60
4 05/14/2025 16:03:47 71.26, -66.42 52.42 05/14/2025 16:02:56 71.26, -66.50 52.44 2.99 51
5 05/14/2025 16:54:32 -71.32, 100.80 127.52 05/14/2025 16:53:57 -71.32, 100.85 127.52 1.99 35
6 05/14/2025 17:45:18 71.31, -91.88 52.46 05/14/2025 17:44:51 71.33, -91.84 52.49 3.21 27
7 05/14/2025 18:36:02 -71.32, 75.42 127.54 05/14/2025 18:35:53 -71.34, 75.42 127.51 2.98 9
8 05/14/2025 19:26:49 71.36,-117.35 52.50 05/14/2025 19:26:47 71.36,-117.28 52.50 2.56 2
9 05/14/2025 20:17:33 -71.37, 49.95 127.50 05/14/2025 20:17:49 -71.37, 49.98 127.50 1.05 16
10 05/14/2025 21:08:19 71.36,-142.73 52.49 05/14/2025 21:08:43 71.39,-142.72 52.51 2.64 24
11 05/14/2025 21:59:03 -71.37, 24.57 127.52 05/14/2025 21:59:45 -71.40, 24.55 127.49 3.04 42
12 05/14/2025 22:49:50 71.42,-168.20 52.53 05/14/2025 22:50:39 71.41,-168.15 52.52 1.64 49
13 05/14/2025 23:40:34 -71.42, -0.89 127.48 05/14/2025 23:41:41 -71.42, -0.89 127.49 0.18 67
14 05/15/2025 00:31:21 71.47, 166.33 52.57 05/15/2025 00:32:35 71.44, 166.41 52.52 4.41 74
15 05/15/2025 01:22:17 -72.09, -27.50 126.78 05/15/2025 01:23:25 -72.06, -25.16 126.90 80.12 68

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 5/9/2025
SNOs_Map_NOAA-21_NOAA-19_20250509.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 05/09/2025 in txt file.

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