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: 3/15/2025
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 03/27/2025 04:13:32 71.20, 111.28 68.56 03/27/2025 04:12:20 71.20, 110.10 68.62 42.35 72
2 03/27/2025 05:04:23 -71.55, -82.02 111.09 03/27/2025 05:03:08 -71.54, -82.01 111.09 0.88 75
3 03/27/2025 05:55:09 71.57, 85.25 68.92 03/27/2025 05:54:10 71.54, 85.24 68.91 3.30 59
4 03/27/2025 06:45:53 -71.56,-107.40 111.11 03/27/2025 06:45:04 -71.58,-107.43 111.08 2.36 49
5 03/27/2025 07:36:39 71.58, 59.86 68.91 03/27/2025 07:36:06 71.58, 59.82 68.91 1.41 33
6 03/27/2025 08:27:24 -71.62,-132.89 111.08 03/27/2025 08:27:00 -71.61,-132.85 111.08 1.36 24
7 03/27/2025 09:18:10 71.64, 34.38 68.94 03/27/2025 09:18:02 71.62, 34.40 68.92 3.07 8
8 03/27/2025 10:08:54 -71.62,-158.27 111.10 03/27/2025 10:08:56 -71.65,-158.27 111.08 2.49 2
9 03/27/2025 10:59:40 71.65, 8.99 68.92 03/27/2025 10:59:58 71.65, 8.98 68.92 0.18 18
10 03/27/2025 11:50:25 -71.68, 176.24 111.06 03/27/2025 11:50:52 -71.68, 176.31 111.07 2.43 27
11 03/27/2025 12:41:10 71.66, -16.40 68.90 03/27/2025 12:41:54 71.69, -16.43 68.93 3.33 44
12 03/27/2025 13:31:55 -71.69, 150.86 111.08 03/27/2025 13:32:48 -71.72, 150.90 111.07 3.12 53
13 03/27/2025 14:22:41 71.72, -41.88 68.94 03/27/2025 14:23:50 71.72, -41.85 68.93 1.21 69
14 03/27/2025 15:13:29 -71.90, 125.09 110.88 03/27/2025 15:14:42 -71.85, 125.67 110.97 21.06 73
15 03/27/2025 16:04:26 72.50, -68.75 69.75 03/27/2025 16:05:32 72.46, -65.85 69.59 97.00 66

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 3/15/2025
SNOs_Map_NOAA-21_NOAA-19_20250315.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 03/15/2025 in txt file.

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