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: 7/30/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 07/31/2025 10:25:23 0.02,-137.00 -0.32,-135.47 174.59 80
2 08/01/2025 22:47:21 -0.02,-137.00 -0.84,-140.78 429.92 80
3 08/02/2025 22:31:15 -0.02,-137.00 0.12,-136.24 86.05 80
4 08/05/2025 10:34:18 0.03,-136.97 0.06,-136.97 3.03 80
5 08/07/2025 22:34:50 -0.04,-136.95 -0.24,-137.75 91.64 80
6 08/08/2025 22:18:45 -0.04,-136.93 0.79,-133.22 423.28 80
7 08/10/2025 10:40:33 0.05,-136.91 0.42,-138.48 180.23 80
8 08/11/2025 10:19:08 0.05,-136.89 -0.60,-133.95 334.35 80
9 08/12/2025 22:41:04 -0.05,-136.86 -0.57,-139.26 272.69 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 7/30/2025
SNOs_Map_GOES-18_NOAA-21_20250731.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 07/30/2025 in txt file.

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