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: 4/4/2025
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 -70.76, -82.89 117.94 85.75 68
2 04/12/2025 05:54:42 71.30, 85.82 62.51 04/12/2025 05:53:29 71.31, 85.32 62.56 17.89 73
3 04/12/2025 06:45:30 -71.48,-107.19 117.32 04/12/2025 06:44:21 -71.46,-107.14 117.32 2.76 69
4 04/12/2025 07:36:15 71.46, 60.15 62.66 04/12/2025 07:35:23 71.45, 60.08 62.65 3.08 52
5 04/12/2025 08:27:00 -71.49,-132.58 117.33 04/12/2025 08:26:17 -71.49,-132.57 117.32 0.69 43
6 04/12/2025 09:17:46 71.53, 34.66 62.70 04/12/2025 09:17:18 71.53, 34.75 62.71 3.02 28
7 04/12/2025 10:08:29 -71.50,-157.98 117.34 04/12/2025 10:08:12 -71.52,-157.99 117.32 2.57 17
8 04/12/2025 10:59:15 71.54, 9.27 62.69 04/12/2025 10:59:13 71.56, 9.32 62.71 3.23 2
9 04/12/2025 11:50:00 -71.56, 176.54 117.30 04/12/2025 11:50:08 -71.55, 176.58 117.31 1.91 8
10 04/12/2025 12:40:45 71.55, -16.12 62.67 04/12/2025 12:41:10 71.54, -16.20 62.66 2.72 25
11 04/12/2025 13:31:30 -71.57, 151.14 117.32 04/12/2025 13:32:04 -71.59, 151.16 117.31 1.52 34
12 04/12/2025 14:22:16 71.61, -41.61 62.71 04/12/2025 14:23:05 71.62, -41.53 62.72 3.25 49
13 04/12/2025 15:13:01 -71.64, 125.66 117.28 04/12/2025 15:14:00 -71.62, 125.73 117.31 3.42 59
14 04/12/2025 16:03:47 71.67, -67.10 62.76 04/12/2025 16:05:01 71.65, -66.95 62.72 5.55 74
15 04/12/2025 16:54:39 -72.06, 99.50 116.85 04/12/2025 16:55:49 -72.00, 100.99 116.97 51.63 70

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 4/4/2025
SNOs_Map_NOAA-21_NOAA-19_20250404.jpg

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

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