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: 4/7/2025
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 -70.74, -80.56 118.07 04/12/2025 05:02:38 -70.75, -82.92 117.96 86.72 68
2 04/12/2025 05:54:42 71.29, 85.82 62.51 04/12/2025 05:53:29 71.30, 85.29 62.54 18.82 73
3 04/12/2025 06:45:29 -71.43,-107.10 117.37 04/12/2025 06:44:21 -71.44,-107.17 117.34 3.06 68
4 04/12/2025 07:36:15 71.46, 60.15 62.66 04/12/2025 07:35:22 71.48, 60.15 62.69 2.71 53
5 04/12/2025 08:27:00 -71.49,-132.58 117.33 04/12/2025 08:26:17 -71.47,-132.60 117.34 1.68 43
6 04/12/2025 09:17:45 71.52, 34.67 62.70 04/12/2025 09:17:17 71.52, 34.72 62.69 2.12 28
7 04/12/2025 10:08:29 -71.50,-157.98 117.34 04/12/2025 10:08:12 -71.51,-158.02 117.33 1.64 17
8 04/12/2025 10:59:15 71.53, 9.27 62.68 04/12/2025 10:59:13 71.55, 9.30 62.70 1.65 2
9 04/12/2025 11:50:00 -71.56, 176.54 117.30 04/12/2025 11:50:08 -71.54, 176.55 117.33 2.86 8
10 04/12/2025 12:40:46 71.60, -16.21 62.72 04/12/2025 12:41:09 71.58, -16.13 62.70 3.63 23
11 04/12/2025 13:31:30 -71.57, 151.14 117.32 04/12/2025 13:32:04 -71.57, 151.13 117.33 0.70 34
12 04/12/2025 14:22:16 71.61, -41.61 62.71 04/12/2025 14:23:05 71.61, -41.55 62.70 1.86 49
13 04/12/2025 15:13:00 -71.58, 125.75 117.33 04/12/2025 15:14:00 -71.60, 125.70 117.32 2.39 60
14 04/12/2025 16:03:47 71.67, -67.10 62.75 04/12/2025 16:05:01 71.64, -66.98 62.71 5.26 74
15 04/12/2025 16:54:38 -72.01, 99.59 116.91 04/12/2025 16:55:49 -71.99, 100.96 116.99 46.96 71

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 4/7/2025
SNOs_Map_NOAA-21_NOAA-19_20250407.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 04/07/2025 in txt file.

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