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: 4/12/2025
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, -80.54 118.08 04/12/2025 05:02:38 -70.71, -82.99 117.99 90.01 67
2 04/12/2025 05:54:42 71.33, 85.76 62.54 04/12/2025 05:53:28 71.31, 85.32 62.56 15.60 74
3 04/12/2025 06:45:29 -71.47,-107.17 117.33 04/12/2025 06:44:20 -71.45,-107.15 117.33 1.68 69
4 04/12/2025 07:36:15 71.49, 60.09 62.69 04/12/2025 07:35:21 71.50, 60.18 62.71 3.18 54
5 04/12/2025 08:26:59 -71.48,-132.57 117.34 04/12/2025 08:26:16 -71.49,-132.58 117.33 0.91 43
6 04/12/2025 09:17:45 71.51, 34.70 62.68 04/12/2025 09:17:18 71.48, 34.66 62.66 3.09 27
7 04/12/2025 10:08:30 -71.54,-158.05 117.30 04/12/2025 10:08:12 -71.52,-158.00 117.32 3.15 18
8 04/12/2025 10:59:15 71.52, 9.30 62.67 04/12/2025 10:59:14 71.51, 9.23 62.66 2.58 1
9 04/12/2025 11:50:00 -71.55, 176.55 117.31 04/12/2025 11:50:08 -71.55, 176.57 117.32 0.75 8
10 04/12/2025 12:40:46 71.58, -16.19 62.71 04/12/2025 12:41:09 71.59, -16.10 62.71 3.41 23
11 04/12/2025 13:31:30 -71.56, 151.16 117.33 04/12/2025 13:32:04 -71.58, 151.15 117.32 2.06 34
12 04/12/2025 14:22:16 71.59, -41.58 62.69 04/12/2025 14:23:06 71.57, -41.62 62.67 2.33 50
13 04/12/2025 15:13:01 -71.62, 125.67 117.29 04/12/2025 15:14:00 -71.61, 125.72 117.31 2.24 59
14 04/12/2025 16:03:48 71.70, -67.16 62.79 04/12/2025 16:05:01 71.66, -66.95 62.72 9.07 73
15 04/12/2025 16:54:39 -72.05, 99.52 116.86 04/12/2025 16:55:49 -72.00, 100.98 116.98 50.54 70

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 4/12/2025
SNOs_Map_NOAA-21_NOAA-19_20250412.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 04/12/2025 in txt file.

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