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: 7/11/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 07/11/2025 22:41:02 0.03,-137.01 -0.46,-139.26 256.73 80
2 07/12/2025 22:24:58 0.03,-137.00 0.54,-134.73 259.22 80
3 07/14/2025 10:44:05 -0.03,-136.99 0.66,-139.99 342.44 80
4 07/15/2025 10:28:00 -0.03,-136.99 -0.35,-135.46 173.28 80
5 07/16/2025 22:47:19 0.03,-136.98 -0.79,-140.78 432.53 80
6 07/17/2025 22:31:14 0.03,-136.97 0.22,-136.25 82.80 80
7 07/20/2025 10:31:37 -0.04,-136.94 -0.02,-136.98 5.74 80
8 07/22/2025 22:34:50 0.05,-136.89 -0.15,-137.76 99.18 80
9 07/23/2025 22:18:45 0.05,-136.87 0.86,-133.23 414.98 80
10 07/25/2025 10:37:54 -0.06,-136.84 0.29,-138.51 189.36 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 7/11/2025
SNOs_Map_GOES-18_NOAA-21_20250712.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 07/11/2025 in txt file.

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