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: 4/10/2025
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 -70.73, -80.55 118.07 04/12/2025 05:02:37 -70.75, -82.91 117.95 86.81 68
2 04/12/2025 05:54:41 71.28, 85.84 62.49 04/12/2025 05:53:28 71.31, 85.31 62.55 19.13 73
3 04/12/2025 06:45:29 -71.47,-107.18 117.32 04/12/2025 06:44:20 -71.45,-107.16 117.33 2.73 69
4 04/12/2025 07:36:15 71.50, 60.08 62.70 04/12/2025 07:35:21 71.49, 60.16 62.70 3.14 54
5 04/12/2025 08:26:59 -71.48,-132.57 117.34 04/12/2025 08:26:16 -71.48,-132.59 117.33 0.57 43
6 04/12/2025 09:17:45 71.51, 34.68 62.69 04/12/2025 09:17:17 71.52, 34.74 62.70 2.17 28
7 04/12/2025 10:08:29 -71.49,-157.97 117.35 04/12/2025 10:08:12 -71.51,-158.01 117.33 2.55 17
8 04/12/2025 10:59:15 71.52, 9.29 62.67 04/12/2025 10:59:14 71.50, 9.21 62.66 3.50 1
9 04/12/2025 11:50:00 -71.56, 176.55 117.31 04/12/2025 11:50:08 -71.54, 176.56 117.32 1.54 8
10 04/12/2025 12:40:46 71.59, -16.20 62.71 04/12/2025 12:41:09 71.58, -16.12 62.71 2.79 23
11 04/12/2025 13:31:30 -71.57, 151.15 117.32 04/12/2025 13:32:04 -71.57, 151.14 117.32 1.04 34
12 04/12/2025 14:22:16 71.60, -41.59 62.70 04/12/2025 14:23:05 71.62, -41.54 62.71 2.77 49
13 04/12/2025 15:13:01 -71.63, 125.67 117.28 04/12/2025 15:14:00 -71.61, 125.71 117.32 3.02 59
14 04/12/2025 16:03:47 71.66, -67.08 62.74 04/12/2025 16:05:01 71.65, -66.97 62.71 4.05 74
15 04/12/2025 16:54:38 -72.00, 99.61 116.91 04/12/2025 16:55:49 -71.99, 100.97 116.98 46.78 71

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 4/10/2025
SNOs_Map_NOAA-21_NOAA-19_20250410.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 04/10/2025 in txt file.

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