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: 4/5/2025
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, -80.55 118.07 04/12/2025 05:02:38 -70.75, -82.91 117.95 86.42 68
2 04/12/2025 05:54:41 71.29, 85.83 62.50 04/12/2025 05:53:28 71.31, 85.31 62.55 18.56 73
3 04/12/2025 06:45:29 -71.47,-107.18 117.32 04/12/2025 06:44:20 -71.45,-107.15 117.33 2.76 69
4 04/12/2025 07:36:14 71.46, 60.16 62.65 04/12/2025 07:35:21 71.49, 60.16 62.70 3.69 53
5 04/12/2025 08:26:59 -71.49,-132.58 117.33 04/12/2025 08:26:16 -71.48,-132.58 117.33 0.23 43
6 04/12/2025 09:17:45 71.52, 34.67 62.70 04/12/2025 09:17:17 71.52, 34.74 62.70 2.30 28
7 04/12/2025 10:08:29 -71.50,-157.97 117.35 04/12/2025 10:08:12 -71.51,-158.00 117.32 2.38 17
8 04/12/2025 10:59:15 71.53, 9.28 62.68 04/12/2025 10:59:13 71.55, 9.31 62.70 2.69 2
9 04/12/2025 11:50:00 -71.56, 176.54 117.31 04/12/2025 11:50:08 -71.55, 176.57 117.32 1.67 8
10 04/12/2025 12:40:45 71.54, -16.12 62.67 04/12/2025 12:41:10 71.53, -16.21 62.66 3.48 25
11 04/12/2025 13:31:30 -71.57, 151.15 117.32 04/12/2025 13:32:04 -71.58, 151.15 117.32 0.94 34
12 04/12/2025 14:22:16 71.61, -41.60 62.71 04/12/2025 14:23:05 71.62, -41.54 62.71 2.48 49
13 04/12/2025 15:13:01 -71.63, 125.66 117.28 04/12/2025 15:14:00 -71.61, 125.72 117.31 3.23 59
14 04/12/2025 16:03:47 71.67, -67.09 62.75 04/12/2025 16:05:01 71.65, -66.97 62.71 4.98 74
15 04/12/2025 16:54:39 -72.05, 99.51 116.86 04/12/2025 16:55:49 -72.00, 100.98 116.98 50.96 70

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 4/5/2025
SNOs_Map_NOAA-21_NOAA-19_20250405.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 04/05/2025 in txt file.

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