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: 5/11/2025
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 05/14/2025 13:31:24 -70.88, 152.29 127.95 05/14/2025 13:30:13 -70.87, 151.03 127.91 45.93 71
2 05/14/2025 14:22:16 71.18, -40.92 52.37 05/14/2025 14:21:02 71.14, -41.22 52.35 11.67 74
3 05/14/2025 15:13:01 -71.25, 126.29 127.58 05/14/2025 15:12:02 -71.25, 126.22 127.56 2.59 59
4 05/14/2025 16:03:48 71.29, -66.47 52.46 05/14/2025 16:02:56 71.27, -66.47 52.45 1.76 52
5 05/14/2025 16:54:32 -71.30, 100.82 127.54 05/14/2025 16:53:58 -71.28, 100.79 127.55 2.54 34
6 05/14/2025 17:45:18 71.29, -91.85 52.44 05/14/2025 17:44:52 71.30, -91.91 52.46 2.25 26
7 05/14/2025 18:36:03 -71.35, 75.36 127.50 05/14/2025 18:35:53 -71.36, 75.44 127.50 3.14 10
8 05/14/2025 19:26:49 71.34,-117.32 52.48 05/14/2025 19:26:48 71.32,-117.34 52.47 2.19 1
9 05/14/2025 20:17:33 -71.35, 49.98 127.52 05/14/2025 20:17:50 -71.33, 49.91 127.54 3.20 17
10 05/14/2025 21:08:19 71.34,-142.70 52.47 05/14/2025 21:08:44 71.35,-142.78 52.47 3.12 25
11 05/14/2025 21:59:04 -71.41, 24.51 127.48 05/14/2025 21:59:45 -71.41, 24.57 127.48 2.23 41
12 05/14/2025 22:49:50 71.40,-168.16 52.51 05/14/2025 22:50:40 71.38,-168.22 52.48 2.93 50
13 05/14/2025 23:40:33 -71.41, -0.87 127.49 05/14/2025 23:41:40 -71.44, -0.86 127.47 3.35 67
14 05/15/2025 00:31:21 71.50, 166.27 52.60 05/15/2025 00:32:34 71.45, 166.44 52.54 7.91 73
15 05/15/2025 01:22:16 -72.08, -27.47 126.80 05/15/2025 01:23:24 -72.07, -25.14 126.89 79.96 68

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 5/11/2025
SNOs_Map_NOAA-21_NOAA-19_20250511.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 05/11/2025 in txt file.

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