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: 7/17/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 07/17/2025 22:31:14 0.01,-137.01 0.18,-136.24 87.99 80
2 07/20/2025 10:31:36 -0.01,-136.99 0.01,-136.97 2.54 80
3 07/22/2025 22:34:49 0.01,-136.98 -0.18,-137.75 88.30 80
4 07/23/2025 22:18:45 0.01,-136.97 0.83,-133.22 426.90 80
5 07/25/2025 10:40:33 -0.01,-136.94 0.31,-138.50 176.61 80
6 07/26/2025 10:21:49 -0.01,-136.93 -0.70,-133.97 338.58 80
7 07/27/2025 22:41:05 0.01,-136.93 -0.53,-139.27 266.83 80
8 07/28/2025 22:25:00 0.01,-136.92 0.48,-134.74 248.34 80
9 07/30/2025 10:44:09 -0.01,-136.89 0.66,-140.01 355.48 80
10 07/31/2025 10:28:03 -0.01,-136.87 -0.29,-135.47 159.30 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 7/17/2025
SNOs_Map_GOES-18_NOAA-21_20250718.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 07/17/2025 in txt file.

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