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: 4/15/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 04/17/2025 22:33:52 0.01,-137.00 -0.09,-137.51 57.58 80
2 04/18/2025 22:17:46 0.01,-136.99 0.92,-132.97 459.09 80
3 04/20/2025 10:39:31 -0.00,-136.98 0.25,-138.23 142.18 80
4 04/21/2025 10:18:04 -0.00,-136.97 -0.76,-133.69 374.10 80
5 04/22/2025 22:39:57 -0.00,-136.96 -0.47,-138.97 230.01 80
6 04/23/2025 22:23:50 0.00,-136.95 0.55,-134.44 286.09 80
7 04/25/2025 10:45:36 -0.00,-136.92 0.63,-139.70 316.02 80
8 04/26/2025 10:24:09 0.00,-136.91 -0.40,-135.16 199.66 80
9 04/27/2025 22:46:01 -0.00,-136.89 -0.81,-140.44 405.55 80
10 04/28/2025 22:29:55 -0.00,-136.87 0.22,-135.91 109.65 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 4/15/2025
SNOs_Map_GOES-18_NOAA-21_20250416.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 04/15/2025 in txt file.

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