Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-21 and TERRA Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 6/20/2025
Index Date (NOAA-21) Time (NOAA-21) Lat,Lon (NOAA-21) SZA (NOAA-21 ) Date (TERRA) Time (TERRA) Lat,Lon (TERRA) SZA (TERRA ) Distance(km) Time Diff (sec)
1 06/20/2025 08:34:57 -74.55,-141.02 128.53 06/20/2025 08:36:04 -74.46,-138.45 128.80 77.12 67
2 06/20/2025 09:25:30 73.89, 27.96 50.72 06/20/2025 09:25:33 73.89, 27.95 50.72 0.44 3
3 06/20/2025 10:16:09 -73.67,-164.20 129.53 06/20/2025 10:14:56 -73.76,-164.67 129.40 17.36 73
4 06/22/2025 18:56:41 74.58,-116.54 51.53 06/22/2025 18:57:47 74.50,-113.84 51.25 80.54 66
5 06/22/2025 19:47:11 -73.92, 52.47 129.23 06/22/2025 19:47:19 -73.89, 52.46 129.27 3.69 8
6 06/22/2025 20:37:52 73.65,-139.58 50.47 06/22/2025 20:36:40 73.74,-140.19 50.61 21.22 72
7 06/25/2025 06:08:53 73.91, 77.07 50.82 06/25/2025 06:09:01 73.91, 77.03 50.82 1.06 8
8 06/25/2025 06:59:35 -73.83,-115.43 129.27 06/25/2025 06:58:23 -73.83,-115.49 129.26 2.17 72
9 06/27/2025 16:30:34 -73.94, 101.58 129.06 06/27/2025 16:30:46 -73.93, 101.59 129.07 0.83 12
10 06/27/2025 17:21:18 73.83, -90.85 50.82 06/27/2025 17:20:06 73.84, -90.94 50.86 3.14 72
11 06/30/2025 02:52:17 73.95, 126.14 51.09 06/30/2025 02:52:29 73.94, 126.11 51.08 1.38 12
12 06/30/2025 03:42:59 -73.86, -66.33 129.01 06/30/2025 03:41:51 -73.84, -66.42 129.00 3.33 68
13 07/02/2025 13:13:58 -73.97, 150.66 128.71 07/02/2025 13:14:13 -73.97, 150.71 128.71 1.73 15

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 6/20/2025
SNOs_Map_NOAA-21_TERRA_20250620.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 06/20/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA