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: 9/10/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 09/11/2025 10:40:27 -0.02,-136.99 0.30,-138.47 167.95 80
2 09/12/2025 10:19:01 -0.02,-136.99 -0.70,-133.93 348.31 80
3 09/13/2025 22:40:57 0.03,-136.99 -0.46,-139.23 255.18 80
4 09/14/2025 22:24:51 0.03,-136.98 0.53,-134.70 260.63 80
5 09/16/2025 10:46:38 -0.03,-136.96 0.65,-139.96 342.50 80
6 09/17/2025 10:25:13 -0.03,-136.95 -0.35,-135.43 173.13 80
7 09/18/2025 22:47:08 0.03,-136.95 -0.81,-140.73 430.97 80
8 09/19/2025 22:31:03 0.03,-136.94 0.19,-136.19 84.75 80
9 09/22/2025 10:34:05 -0.03,-136.90 -0.01,-136.92 3.26 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 9/10/2025
SNOs_Map_GOES-18_NOAA-21_20250911.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 09/10/2025 in txt file.

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