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: 4/1/2025
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 -70.72, -80.53 118.08 04/12/2025 05:02:39 -70.72, -82.97 117.98 89.37 67
2 04/12/2025 05:54:43 71.34, 85.74 62.55 04/12/2025 05:53:29 71.32, 85.33 62.56 14.92 74
3 04/12/2025 06:45:30 -71.46,-107.17 117.33 04/12/2025 06:44:21 -71.47,-107.12 117.32 1.54 69
4 04/12/2025 07:36:15 71.45, 60.17 62.65 04/12/2025 07:35:23 71.45, 60.09 62.66 2.74 52
5 04/12/2025 08:27:00 -71.47,-132.56 117.35 04/12/2025 08:26:17 -71.50,-132.55 117.31 2.88 43
6 04/12/2025 09:17:46 71.51, 34.68 62.69 04/12/2025 09:17:19 71.48, 34.67 62.66 3.33 27
7 04/12/2025 10:08:31 -71.54,-158.04 117.31 04/12/2025 10:08:13 -71.53,-157.97 117.31 2.51 18
8 04/12/2025 10:59:16 71.52, 9.29 62.67 04/12/2025 10:59:15 71.52, 9.24 62.67 1.99 1
9 04/12/2025 11:50:01 -71.55, 176.56 117.32 04/12/2025 11:50:09 -71.56, 176.60 117.31 2.28 8
10 04/12/2025 12:40:46 71.53, -16.10 62.66 04/12/2025 12:41:11 71.55, -16.19 62.67 3.17 25
11 04/12/2025 13:31:31 -71.56, 151.17 117.33 04/12/2025 13:32:06 -71.54, 151.08 117.35 3.43 35
12 04/12/2025 14:22:17 71.60, -41.59 62.70 04/12/2025 14:23:07 71.58, -41.61 62.67 2.22 50
13 04/12/2025 15:13:02 -71.62, 125.68 117.29 04/12/2025 15:14:01 -71.63, 125.75 117.30 2.54 59
14 04/12/2025 16:03:49 71.71, -67.17 62.80 04/12/2025 16:05:02 71.66, -66.94 62.73 9.90 73
15 04/12/2025 16:54:40 -72.04, 99.53 116.87 04/12/2025 16:55:50 -72.01, 101.01 116.96 51.02 70

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 4/1/2025
SNOs_Map_NOAA-21_NOAA-19_20250401.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 04/01/2025 in txt file.

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