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: 4/9/2025
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 04/12/2025 05:03:45 -70.71, -80.52 118.09 04/12/2025 05:02:38 -70.72, -82.97 117.98 90.05 67
2 04/12/2025 05:54:42 71.32, 85.78 62.53 04/12/2025 05:53:28 71.32, 85.34 62.57 15.64 74
3 04/12/2025 06:45:29 -71.45,-107.15 117.34 04/12/2025 06:44:20 -71.47,-107.13 117.32 1.70 69
4 04/12/2025 07:36:15 71.48, 60.11 62.68 04/12/2025 07:35:22 71.46, 60.10 62.67 2.77 53
5 04/12/2025 08:27:00 -71.52,-132.63 117.30 04/12/2025 08:26:16 -71.50,-132.55 117.31 3.45 44
6 04/12/2025 09:17:45 71.49, 34.72 62.67 04/12/2025 09:17:18 71.49, 34.67 62.67 1.55 27
7 04/12/2025 10:08:30 -71.53,-158.03 117.32 04/12/2025 10:08:12 -71.53,-157.98 117.31 1.77 18
8 04/12/2025 10:59:15 71.51, 9.32 62.65 04/12/2025 10:59:14 71.52, 9.25 62.67 3.15 1
9 04/12/2025 11:50:00 -71.54, 176.58 117.33 04/12/2025 11:50:08 -71.56, 176.60 117.31 2.75 8
10 04/12/2025 12:40:46 71.57, -16.16 62.69 04/12/2025 12:41:10 71.55, -16.18 62.68 1.82 24
11 04/12/2025 13:31:31 -71.60, 151.09 117.29 04/12/2025 13:32:04 -71.59, 151.17 117.30 2.84 33
12 04/12/2025 14:22:16 71.58, -41.56 62.68 04/12/2025 14:23:06 71.58, -41.60 62.68 1.68 50
13 04/12/2025 15:13:01 -71.61, 125.70 117.30 04/12/2025 15:14:00 -71.62, 125.75 117.30 2.25 59
14 04/12/2025 16:03:48 71.69, -67.14 62.78 04/12/2025 16:05:01 71.67, -66.93 62.73 7.85 73
15 04/12/2025 16:54:39 -72.03, 99.54 116.88 04/12/2025 16:55:50 -71.96, 100.91 117.01 47.49 71

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 4/9/2025
SNOs_Map_NOAA-21_NOAA-19_20250409.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 04/09/2025 in txt file.

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