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: 4/7/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 04/07/2025 22:21:38 -0.01,-136.98 0.54,-134.54 277.93 80
2 04/09/2025 10:46:03 0.01,-136.99 0.65,-139.80 320.33 80
3 04/10/2025 10:24:38 0.01,-137.00 -0.40,-135.27 197.43 80
4 04/11/2025 22:49:11 -0.01,-137.00 -0.82,-140.56 405.21 80
5 04/12/2025 22:27:46 -0.01,-137.01 0.23,-136.03 112.26 80
6 04/14/2025 10:52:11 0.01,-137.01 0.95,-141.29 487.04 80
7 04/15/2025 10:30:44 0.01,-137.01 -0.05,-136.75 29.90 80
8 04/17/2025 22:36:31 -0.01,-137.00 -0.14,-137.50 57.49 80
9 04/18/2025 22:15:05 -0.02,-136.99 0.87,-132.96 458.91 80
10 04/20/2025 10:39:30 0.02,-136.98 0.31,-138.22 142.05 80
11 04/21/2025 10:18:04 0.03,-136.96 -0.71,-133.68 373.96 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 4/7/2025
SNOs_Map_GOES-18_NOAA-21_20250408.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 04/07/2025 in txt file.

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