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: 5/12/2025
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 -70.92, 152.23 127.91 05/14/2025 13:30:12 -70.89, 151.06 127.89 42.69 72
2 05/14/2025 14:22:15 71.17, -40.89 52.35 05/14/2025 14:21:01 71.16, -41.18 52.36 10.69 74
3 05/14/2025 15:13:01 -71.28, 126.23 127.54 05/14/2025 15:12:01 -71.27, 126.25 127.55 1.43 60
4 05/14/2025 16:03:47 71.27, -66.44 52.44 05/14/2025 16:02:55 71.29, -66.44 52.47 2.41 52
5 05/14/2025 16:54:31 -71.28, 100.85 127.56 05/14/2025 16:53:57 -71.30, 100.82 127.54 2.10 34
6 05/14/2025 17:45:18 71.32, -91.91 52.48 05/14/2025 17:44:51 71.32, -91.87 52.48 1.50 27
7 05/14/2025 18:36:02 -71.34, 75.38 127.52 05/14/2025 18:35:53 -71.32, 75.38 127.53 1.21 9
8 05/14/2025 19:26:48 71.32,-117.29 52.46 05/14/2025 19:26:47 71.34,-117.31 52.48 2.28 1
9 05/14/2025 20:17:32 -71.34, 50.01 127.54 05/14/2025 20:17:49 -71.35, 49.95 127.52 2.71 17
10 05/14/2025 21:08:19 71.38,-142.76 52.50 05/14/2025 21:08:43 71.37,-142.75 52.49 0.94 24
11 05/14/2025 21:59:03 -71.39, 24.54 127.50 05/14/2025 21:59:45 -71.38, 24.51 127.51 1.64 42
12 05/14/2025 22:49:49 71.38,-168.13 52.49 05/14/2025 22:50:39 71.40,-168.18 52.50 2.58 50
13 05/14/2025 23:40:33 -71.39, -0.84 127.51 05/14/2025 23:41:41 -71.40, -0.92 127.50 3.43 68
14 05/15/2025 00:31:21 71.48, 166.31 52.58 05/15/2025 00:32:34 71.47, 166.48 52.56 6.11 73
15 05/15/2025 01:22:17 -72.11, -27.54 126.76 05/15/2025 01:23:25 -72.04, -25.20 126.92 80.45 68

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 5/12/2025
SNOs_Map_NOAA-21_NOAA-19_20250512.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 05/12/2025 in txt file.

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