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: 8/19/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 08/21/2025 10:31:39 -0.03,-136.99 -0.03,-136.99 1.03 80
2 08/23/2025 22:34:50 0.04,-137.00 -0.15,-137.76 86.67 80
3 08/24/2025 22:18:45 0.04,-137.00 0.88,-133.23 429.94 80
4 08/26/2025 10:40:33 -0.04,-136.99 0.27,-138.50 172.14 80
5 08/27/2025 10:19:08 -0.04,-136.99 -0.70,-133.96 344.08 80
6 08/28/2025 22:41:03 0.04,-136.99 -0.50,-139.26 259.61 80
7 08/29/2025 22:24:59 0.04,-136.98 0.54,-134.74 256.13 80
8 08/31/2025 10:46:47 -0.05,-136.96 0.61,-140.01 347.42 80
9 09/01/2025 10:25:22 -0.05,-136.95 -0.36,-135.47 167.70 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 8/19/2025
SNOs_Map_GOES-18_NOAA-21_20250820.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 08/19/2025 in txt file.

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