Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-20 and TERRA Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 4/16/2025
Index Date (NOAA-20) Time (NOAA-20) Lat,Lon (NOAA-20) SZA (NOAA-20 ) Date (TERRA) Time (TERRA) Lat,Lon (TERRA) SZA (TERRA ) Distance(km) Time Diff (sec)
1 04/16/2025 21:32:26 -73.55, 26.60 116.71 04/16/2025 21:33:07 -73.53, 26.60 116.75 2.60 41
2 04/16/2025 22:23:10 73.45,-165.85 63.16 04/16/2025 22:22:27 73.46,-165.87 63.19 1.60 43
3 04/19/2025 07:54:11 73.56, 51.15 62.44 04/19/2025 07:55:03 73.53, 51.08 62.41 3.29 52
4 04/19/2025 08:44:54 -73.51,-141.42 117.63 04/19/2025 08:44:24 -73.49,-141.33 117.64 2.89 30
5 04/21/2025 18:15:53 -73.57, 75.69 118.38 04/21/2025 18:16:58 -73.59, 75.66 118.38 2.29 65
6 04/21/2025 19:06:38 73.53,-116.90 61.56 04/21/2025 19:06:18 73.50,-116.84 61.54 3.22 20
7 04/24/2025 04:37:40 73.71, 99.95 60.96 04/24/2025 04:38:51 73.65, 100.27 60.87 11.80 71
8 04/24/2025 05:28:21 -73.55, -92.36 119.23 04/24/2025 05:28:14 -73.53, -92.33 119.26 2.56 7
9 04/24/2025 06:18:51 72.75, 76.68 59.89 04/24/2025 06:17:45 72.84, 74.00 60.14 88.67 66
10 04/26/2025 14:59:31 -74.12, 123.51 119.37 04/26/2025 15:00:39 -74.06, 125.62 119.56 64.58 68
11 04/26/2025 15:50:05 73.55, -67.80 59.98 04/26/2025 15:50:07 73.54, -67.82 59.97 1.33 2
12 04/26/2025 16:40:44 -73.28, 100.12 120.33 04/26/2025 16:39:32 -73.31, 99.38 120.24 23.74 72
13 04/29/2025 02:11:48 -73.57, -43.28 120.77 04/29/2025 02:12:01 -73.60, -43.22 120.75 3.37 13

Figure of NOAA-20 and TERRA satellite orbits during SNOs since TLE Epoch: 4/16/2025
SNOs_Map_NOAA-20_TERRA_20250416.jpg

Download SNOs between NOAA-20 and TERRA since TLE EPOCH: 04/16/2025 in txt file.

Historial Predications of SNOs between NOAA-20 and TERRA