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: 4/2/2025
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 04/12/2025 05:03:46 -70.75, -80.58 118.05 04/12/2025 05:02:38 -70.74, -82.93 117.96 86.19 68
2 04/12/2025 05:54:42 71.31, 85.79 62.52 04/12/2025 05:53:29 71.29, 85.28 62.54 18.37 73
3 04/12/2025 06:45:29 -71.44,-107.12 117.36 04/12/2025 06:44:21 -71.44,-107.18 117.34 1.93 68
4 04/12/2025 07:36:15 71.48, 60.12 62.68 04/12/2025 07:35:22 71.48, 60.13 62.68 0.48 53
5 04/12/2025 08:27:00 -71.50,-132.61 117.32 04/12/2025 08:26:17 -71.47,-132.60 117.34 3.37 43
6 04/12/2025 09:17:45 71.49, 34.73 62.66 04/12/2025 09:17:18 71.51, 34.71 62.69 2.24 27
7 04/12/2025 10:08:30 -71.51,-158.00 117.33 04/12/2025 10:08:13 -71.50,-158.03 117.34 1.37 17
8 04/12/2025 10:59:16 71.55, 9.24 62.70 04/12/2025 10:59:14 71.54, 9.28 62.69 1.95 2
9 04/12/2025 11:50:00 -71.52, 176.61 117.35 04/12/2025 11:50:09 -71.53, 176.55 117.33 2.49 9
10 04/12/2025 12:40:46 71.56, -16.15 62.69 04/12/2025 12:41:10 71.57, -16.14 62.69 1.06 24
11 04/12/2025 13:31:31 -71.58, 151.12 117.31 04/12/2025 13:32:05 -71.57, 151.12 117.33 1.98 34
12 04/12/2025 14:22:16 71.57, -41.55 62.67 04/12/2025 14:23:06 71.60, -41.57 62.70 3.43 50
13 04/12/2025 15:13:01 -71.60, 125.73 117.32 04/12/2025 15:14:01 -71.60, 125.70 117.32 1.08 60
14 04/12/2025 16:03:48 71.69, -67.13 62.77 04/12/2025 16:05:02 71.63, -66.99 62.70 7.50 74
15 04/12/2025 16:54:39 -72.02, 99.57 116.90 04/12/2025 16:55:50 -71.98, 100.96 116.99 47.64 71

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 4/2/2025
SNOs_Map_NOAA-21_NOAA-19_20250402.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 04/02/2025 in txt file.

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