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: 8/12/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 08/12/2025 22:41:05 -0.01,-137.01 -0.54,-139.26 257.33 80
2 08/13/2025 22:25:01 -0.01,-137.01 0.48,-134.73 259.20 80
3 08/15/2025 10:46:49 0.02,-137.00 0.66,-140.01 342.80 80
4 08/16/2025 10:25:23 0.02,-136.99 -0.30,-135.47 173.07 80
5 08/17/2025 22:47:20 -0.02,-136.99 -0.86,-140.78 431.40 80
6 08/18/2025 22:31:15 -0.03,-136.98 0.17,-136.25 84.15 80
7 08/21/2025 10:34:17 0.04,-136.94 0.07,-136.97 4.97 80
8 08/23/2025 22:34:48 -0.04,-136.92 -0.24,-137.74 93.49 80
9 08/24/2025 22:18:43 -0.04,-136.91 0.79,-133.21 421.80 80
10 08/26/2025 10:40:31 0.04,-136.88 0.42,-138.47 181.85 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 8/12/2025
SNOs_Map_GOES-18_NOAA-21_20250813.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 08/12/2025 in txt file.

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