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: 3/19/2025
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 04:12:21 71.17, 110.04 68.59 44.78 71
2 03/27/2025 05:04:23 -71.55, -82.02 111.09 03/27/2025 05:03:08 -71.55, -81.99 111.07 1.29 75
3 03/27/2025 05:55:09 71.58, 85.25 68.93 03/27/2025 05:54:10 71.56, 85.27 68.92 1.56 59
4 03/27/2025 06:45:52 -71.56,-107.41 111.11 03/27/2025 06:45:03 -71.59,-107.40 111.07 3.15 49
5 03/27/2025 07:36:38 71.58, 59.86 68.91 03/27/2025 07:36:05 71.60, 59.85 68.93 1.61 33
6 03/27/2025 08:27:23 -71.62,-132.89 111.07 03/27/2025 08:26:59 -71.62,-132.82 111.07 2.45 24
7 03/27/2025 09:18:09 71.64, 34.38 68.94 03/27/2025 09:18:01 71.63, 34.43 68.93 2.33 8
8 03/27/2025 10:08:53 -71.63,-158.28 111.09 03/27/2025 10:08:56 -71.61,-158.34 111.11 3.07 3
9 03/27/2025 10:59:39 71.65, 8.99 68.93 03/27/2025 10:59:57 71.67, 9.02 68.94 2.00 18
10 03/27/2025 11:50:23 -71.64, 176.33 111.11 03/27/2025 11:50:52 -71.64, 176.24 111.11 3.06 29
11 03/27/2025 12:41:10 71.71, -16.50 68.96 03/27/2025 12:41:53 71.70, -16.40 68.94 3.46 43
12 03/27/2025 13:31:54 -71.70, 150.85 111.07 03/27/2025 13:32:48 -71.68, 150.82 111.10 2.34 54
13 03/27/2025 14:22:40 71.72, -41.89 68.94 03/27/2025 14:23:49 71.74, -41.82 68.95 2.98 69
14 03/27/2025 15:13:28 -71.91, 125.08 110.87 03/27/2025 15:14:41 -71.86, 125.70 110.96 22.11 73
15 03/27/2025 16:04:25 72.50, -68.75 69.76 03/27/2025 16:05:31 72.48, -65.82 69.60 98.15 66

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 3/19/2025
SNOs_Map_NOAA-21_NOAA-19_20250319.jpg

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

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