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: 8/7/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 08/07/2025 22:34:51 0.02,-137.00 -0.15,-137.77 87.12 80
2 08/08/2025 22:18:47 0.02,-137.00 0.88,-133.24 429.20 80
3 08/10/2025 10:40:34 -0.02,-136.99 0.33,-138.50 171.96 80
4 08/11/2025 10:19:10 -0.02,-136.99 -0.69,-133.97 344.10 80
5 08/12/2025 22:41:06 0.02,-136.99 -0.49,-139.28 260.85 80
6 08/13/2025 22:25:02 0.02,-136.98 0.54,-134.75 254.83 80
7 08/15/2025 10:46:49 -0.02,-136.96 0.68,-140.01 347.70 80
8 08/16/2025 10:25:24 -0.02,-136.95 -0.35,-135.48 167.23 80
9 08/17/2025 22:47:21 0.03,-136.93 -0.82,-140.79 439.55 80
10 08/18/2025 22:31:15 0.03,-136.91 0.15,-136.25 75.03 80
11 08/21/2025 10:34:19 -0.03,-136.86 -0.02,-136.99 14.60 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 8/7/2025
SNOs_Map_GOES-18_NOAA-21_20250808.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 08/07/2025 in txt file.

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