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: 4/8/2025
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 86.73 68
2 04/12/2025 05:54:42 71.29, 85.82 62.50 04/12/2025 05:53:29 71.30, 85.30 62.55 18.87 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 3.24 68
4 04/12/2025 07:36:15 71.46, 60.16 62.65 04/12/2025 07:35:22 71.49, 60.15 62.69 3.21 53
5 04/12/2025 08:27:00 -71.49,-132.58 117.33 04/12/2025 08:26:17 -71.48,-132.59 117.34 1.42 43
6 04/12/2025 09:17:46 71.52, 34.67 62.70 04/12/2025 09:17:18 71.52, 34.73 62.70 1.95 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 1.80 17
8 04/12/2025 10:59:15 71.53, 9.28 62.68 04/12/2025 10:59:13 71.55, 9.30 62.70 2.11 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 2.56 8
10 04/12/2025 12:40:46 71.59, -16.21 62.72 04/12/2025 12:41:09 71.58, -16.13 62.70 3.32 23
11 04/12/2025 13:31:30 -71.57, 151.14 117.32 04/12/2025 13:32:04 -71.57, 151.13 117.32 0.54 34
12 04/12/2025 14:22:16 71.60, -41.60 62.71 04/12/2025 14:23:05 71.61, -41.55 62.70 1.95 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 2.67 60
14 04/12/2025 16:03:47 71.67, -67.09 62.75 04/12/2025 16:05:01 71.64, -66.98 62.71 4.89 74
15 04/12/2025 16:54:38 -72.00, 99.60 116.91 04/12/2025 16:55:49 -71.99, 100.96 116.99 46.93 71

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 4/8/2025
SNOs_Map_NOAA-21_NOAA-19_20250408.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 04/08/2025 in txt file.

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