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: 5/4/2025
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, 152.25 127.92 05/14/2025 13:30:12 -70.90, 151.08 127.88 42.64 72
2 05/14/2025 14:22:15 71.16, -40.88 52.34 05/14/2025 14:21:01 71.17, -41.18 52.37 10.65 74
3 05/14/2025 15:13:01 -71.27, 126.25 127.56 05/14/2025 15:12:01 -71.28, 126.27 127.54 1.67 60
4 05/14/2025 16:03:47 71.27, -66.44 52.44 05/14/2025 16:02:55 71.30, -66.43 52.47 3.04 52
5 05/14/2025 16:54:32 -71.32, 100.78 127.52 05/14/2025 16:53:57 -71.31, 100.84 127.53 2.45 35
6 05/14/2025 17:45:18 71.32, -91.90 52.48 05/14/2025 17:44:51 71.32, -91.87 52.48 1.41 27
7 05/14/2025 18:36:02 -71.32, 75.41 127.53 05/14/2025 18:35:53 -71.34, 75.40 127.52 1.25 9
8 05/14/2025 19:26:48 71.32,-117.28 52.46 05/14/2025 19:26:47 71.35,-117.30 52.49 2.74 1
9 05/14/2025 20:17:33 -71.38, 49.94 127.49 05/14/2025 20:17:49 -71.36, 49.97 127.51 2.01 16
10 05/14/2025 21:08:19 71.38,-142.75 52.50 05/14/2025 21:08:43 71.37,-142.74 52.49 0.60 24
11 05/14/2025 21:59:03 -71.38, 24.56 127.51 05/14/2025 21:59:45 -71.39, 24.53 127.50 1.48 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 2.82 50
13 05/14/2025 23:40:34 -71.43, -0.91 127.47 05/14/2025 23:41:41 -71.41, -0.90 127.50 1.98 67
14 05/15/2025 00:31:21 71.48, 166.31 52.58 05/15/2025 00:32:34 71.48, 166.48 52.56 6.12 73
15 05/15/2025 01:22:17 -72.10, -27.52 126.77 05/15/2025 01:23:25 -72.05, -25.18 126.91 80.19 68

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 5/4/2025
SNOs_Map_NOAA-21_NOAA-19_20250504.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 05/04/2025 in txt file.

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