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: 7/14/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 07/15/2025 10:25:20 0.01,-137.00 -0.33,-135.46 175.83 80
2 07/16/2025 22:47:17 -0.01,-137.01 -0.87,-140.76 428.37 80
3 07/17/2025 22:31:13 -0.01,-137.01 0.14,-136.23 87.85 80
4 07/20/2025 10:34:17 0.01,-136.99 -0.01,-136.98 2.38 80
5 07/22/2025 22:34:50 -0.01,-136.97 -0.17,-137.76 89.24 80
6 07/23/2025 22:18:45 -0.01,-136.96 0.84,-133.23 425.82 80
7 07/25/2025 10:40:32 0.01,-136.94 0.36,-138.49 177.30 80
8 07/26/2025 10:19:08 0.00,-136.92 -0.65,-133.96 337.63 80
9 07/27/2025 22:41:05 -0.00,-136.91 -0.52,-139.27 268.74 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 7/14/2025
SNOs_Map_GOES-18_NOAA-21_20250715.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 07/14/2025 in txt file.

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