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: 7/27/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 07/27/2025 22:41:05 -0.02,-137.00 -0.52,-139.27 257.84 80
2 07/28/2025 22:25:01 -0.02,-137.00 0.50,-134.74 258.28 80
3 07/30/2025 10:46:48 0.02,-136.99 0.70,-140.00 343.66 80
4 07/31/2025 10:25:23 0.02,-136.98 -0.32,-135.47 172.06 80
5 08/01/2025 22:47:20 -0.02,-136.98 -0.90,-140.77 432.98 80
6 08/02/2025 22:31:15 -0.03,-136.97 0.12,-136.24 82.36 80
7 08/05/2025 10:34:18 0.04,-136.92 0.06,-136.98 6.33 80
8 08/07/2025 22:34:50 -0.05,-136.89 -0.23,-137.75 98.23 80
9 08/08/2025 22:18:45 -0.05,-136.87 0.79,-133.22 416.09 80
10 08/10/2025 10:40:33 0.05,-136.83 0.42,-138.48 188.62 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 7/27/2025
SNOs_Map_GOES-18_NOAA-21_20250728.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 07/27/2025 in txt file.

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