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: 3/17/2025
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 71.19, 110.08 68.61 43.12 72
2 03/27/2025 05:04:23 -71.55, -82.02 111.09 03/27/2025 05:03:08 -71.53, -82.04 111.10 2.64 75
3 03/27/2025 05:55:09 71.57, 85.25 68.93 03/27/2025 05:54:09 71.58, 85.31 68.94 2.48 60
4 03/27/2025 06:45:53 -71.56,-107.41 111.11 03/27/2025 06:45:04 -71.56,-107.46 111.10 1.74 49
5 03/27/2025 07:36:39 71.58, 59.86 68.91 03/27/2025 07:36:06 71.57, 59.80 68.90 2.71 33
6 03/27/2025 08:27:24 -71.62,-132.89 111.07 03/27/2025 08:27:00 -71.60,-132.87 111.09 2.40 24
7 03/27/2025 09:18:09 71.59, 34.47 68.89 03/27/2025 09:18:02 71.60, 34.38 68.91 3.47 7
8 03/27/2025 10:08:54 -71.63,-158.28 111.09 03/27/2025 10:08:56 -71.63,-158.29 111.09 0.84 2
9 03/27/2025 10:59:40 71.65, 8.99 68.92 03/27/2025 10:59:58 71.64, 8.96 68.91 1.71 18
10 03/27/2025 11:50:25 -71.69, 176.24 111.06 03/27/2025 11:50:52 -71.67, 176.29 111.08 2.70 27
11 03/27/2025 12:41:10 71.66, -16.40 68.90 03/27/2025 12:41:54 71.67, -16.46 68.91 2.50 44
12 03/27/2025 13:31:55 -71.69, 150.85 111.08 03/27/2025 13:32:48 -71.70, 150.87 111.08 1.03 53
13 03/27/2025 14:22:41 71.72, -41.89 68.94 03/27/2025 14:23:50 71.71, -41.88 68.92 1.27 69
14 03/27/2025 15:13:29 -71.91, 125.08 110.88 03/27/2025 15:14:42 -71.84, 125.64 110.98 20.96 73
15 03/27/2025 16:04:26 72.50, -68.75 69.75 03/27/2025 16:05:32 72.45, -65.88 69.58 96.25 66

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 3/17/2025
SNOs_Map_NOAA-21_NOAA-19_20250317.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 03/17/2025 in txt file.

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