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: 3/31/2025
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 -70.72, -80.52 118.09 04/12/2025 05:02:39 -70.71, -82.98 117.99 90.07 67
2 04/12/2025 05:54:43 71.33, 85.75 62.55 04/12/2025 05:53:29 71.31, 85.32 62.56 15.63 74
3 04/12/2025 06:45:30 -71.46,-107.15 117.34 04/12/2025 06:44:21 -71.46,-107.13 117.32 0.96 69
4 04/12/2025 07:36:16 71.50, 60.09 62.70 04/12/2025 07:35:22 71.50, 60.18 62.70 3.16 54
5 04/12/2025 08:27:00 -71.47,-132.55 117.35 04/12/2025 08:26:17 -71.49,-132.56 117.32 2.98 43
6 04/12/2025 09:17:46 71.51, 34.69 62.68 04/12/2025 09:17:18 71.53, 34.75 62.71 3.07 28
7 04/12/2025 10:08:31 -71.53,-158.03 117.31 04/12/2025 10:08:13 -71.53,-157.98 117.31 1.78 18
8 04/12/2025 10:59:16 71.52, 9.30 62.67 04/12/2025 10:59:15 71.51, 9.23 62.66 2.70 1
9 04/12/2025 11:50:01 -71.54, 176.57 117.33 04/12/2025 11:50:09 -71.56, 176.59 117.31 2.01 8
10 04/12/2025 12:40:47 71.58, -16.19 62.71 04/12/2025 12:41:10 71.59, -16.10 62.71 3.25 23
11 04/12/2025 13:31:32 -71.60, 151.09 117.29 04/12/2025 13:32:05 -71.59, 151.17 117.31 3.12 33
12 04/12/2025 14:22:17 71.59, -41.58 62.69 04/12/2025 14:23:07 71.57, -41.62 62.67 2.66 50
13 04/12/2025 15:13:02 -71.61, 125.69 117.30 04/12/2025 15:14:01 -71.62, 125.74 117.30 1.87 59
14 04/12/2025 16:03:48 71.71, -67.16 62.79 04/12/2025 16:05:01 71.65, -66.95 62.72 9.37 73
15 04/12/2025 16:54:39 -72.03, 99.54 116.88 04/12/2025 16:55:49 -72.01, 101.00 116.97 50.26 70

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 3/31/2025
SNOs_Map_NOAA-21_NOAA-19_20250331.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 03/31/2025 in txt file.

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