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: 4/3/2025
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 05:03:45 -70.71, -80.51 118.10 04/12/2025 05:02:38 -70.71, -82.98 117.99 90.84 67
2 04/12/2025 05:54:42 71.32, 85.78 62.53 04/12/2025 05:53:28 71.31, 85.32 62.56 16.33 74
3 04/12/2025 06:45:29 -71.45,-107.14 117.35 04/12/2025 06:44:20 -71.46,-107.14 117.32 1.35 69
4 04/12/2025 07:36:15 71.48, 60.11 62.68 04/12/2025 07:35:21 71.50, 60.17 62.70 2.69 54
5 04/12/2025 08:27:00 -71.51,-132.62 117.31 04/12/2025 08:26:16 -71.49,-132.56 117.32 2.92 44
6 04/12/2025 09:17:45 71.50, 34.72 62.67 04/12/2025 09:17:18 71.48, 34.65 62.66 3.01 27
7 04/12/2025 10:08:30 -71.52,-158.02 117.32 04/12/2025 10:08:12 -71.52,-157.99 117.32 0.95 18
8 04/12/2025 10:59:16 71.56, 9.23 62.71 04/12/2025 10:59:13 71.56, 9.32 62.71 3.30 3
9 04/12/2025 11:50:00 -71.53, 176.59 117.34 04/12/2025 11:50:08 -71.55, 176.59 117.31 2.58 8
10 04/12/2025 12:40:46 71.57, -16.16 62.70 04/12/2025 12:41:09 71.59, -16.10 62.71 3.22 23
11 04/12/2025 13:31:31 -71.59, 151.11 117.30 04/12/2025 13:32:04 -71.59, 151.16 117.31 2.11 33
12 04/12/2025 14:22:16 71.58, -41.56 62.68 04/12/2025 14:23:06 71.57, -41.62 62.67 2.55 50
13 04/12/2025 15:13:01 -71.60, 125.71 117.31 04/12/2025 15:14:00 -71.62, 125.74 117.31 1.67 59
14 04/12/2025 16:03:48 71.69, -67.14 62.78 04/12/2025 16:05:01 71.65, -66.95 62.72 7.96 73
15 04/12/2025 16:54:39 -72.03, 99.56 116.89 04/12/2025 16:55:50 -71.95, 100.89 117.02 46.69 71

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 4/3/2025
SNOs_Map_NOAA-21_NOAA-19_20250403.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 04/03/2025 in txt file.

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