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: 9/1/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 09/02/2025 22:47:17 0.02,-136.96 -0.83,-140.76 433.39 80
2 09/03/2025 22:31:11 0.02,-136.95 0.16,-136.23 81.90 80
3 09/06/2025 10:34:14 -0.02,-136.91 -0.01,-136.96 6.37 80
4 09/08/2025 22:34:44 0.02,-136.87 -0.16,-137.73 97.59 80
5 09/09/2025 22:18:38 0.02,-136.85 0.83,-133.19 417.02 80
6 09/11/2025 10:40:26 -0.02,-136.81 0.36,-138.46 187.54 80
7 09/12/2025 10:19:00 -0.02,-136.79 -0.64,-133.92 326.36 80
8 09/13/2025 22:40:55 0.03,-136.75 -0.51,-139.23 281.67 80
9 09/14/2025 22:24:50 0.03,-136.72 0.50,-134.69 231.78 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 9/1/2025
SNOs_Map_GOES-18_NOAA-21_20250902.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 09/01/2025 in txt file.

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