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: 7/15/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 07/16/2025 22:47:18 0.01,-137.01 -0.81,-140.78 428.56 80
2 07/17/2025 22:31:14 0.01,-137.01 0.19,-136.24 87.65 80
3 07/20/2025 10:31:37 -0.01,-136.99 -0.00,-136.98 1.78 80
4 07/22/2025 22:34:49 0.01,-136.97 -0.17,-137.76 89.37 80
5 07/23/2025 22:18:45 0.01,-136.96 0.84,-133.22 425.74 80
6 07/25/2025 10:37:53 -0.02,-136.94 0.31,-138.50 177.50 80
7 07/26/2025 10:21:49 -0.01,-136.93 -0.70,-133.97 337.63 80
8 07/27/2025 22:41:05 0.01,-136.92 -0.53,-139.27 268.42 80
9 07/28/2025 22:25:01 0.01,-136.90 0.49,-134.74 246.68 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 7/15/2025
SNOs_Map_GOES-18_NOAA-21_20250716.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 07/15/2025 in txt file.

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