Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between GOES-18 and NOAA-21 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/24/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 09/24/2025 22:34:35 0.02,-137.01 -0.11,-137.69 77.00 80
2 09/25/2025 22:18:29 0.02,-137.01 0.90,-133.16 439.59 80
3 09/27/2025 10:40:16 -0.02,-136.99 0.31,-138.41 161.88 80
4 09/28/2025 10:18:50 -0.02,-136.99 -0.71,-133.88 354.16 80
5 09/29/2025 22:43:24 0.01,-136.98 -0.50,-139.17 250.14 80
6 09/30/2025 22:21:59 0.02,-136.97 0.52,-134.64 265.47 80
7 10/02/2025 10:46:25 -0.01,-136.94 0.67,-139.90 337.25 80
8 10/03/2025 10:25:00 -0.02,-136.93 -0.35,-135.36 178.05 80
9 10/04/2025 22:49:34 0.02,-136.91 -0.84,-140.66 427.26 80
10 10/05/2025 22:30:49 0.02,-136.90 0.18,-136.12 87.91 80
11 10/08/2025 10:33:48 0.00,-136.84 0.02,-136.84 1.18 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 9/24/2025
SNOs_Map_GOES-18_NOAA-21_20250925.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 09/24/2025 in txt file.

Historical Predications of SNOs between GOES-18 and NOAA-21