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: 11/8/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 11/09/2025 10:30:32 -0.01,-136.98 -0.08,-136.66 36.44 80
2 11/11/2025 22:36:30 0.01,-136.97 -0.12,-137.46 55.73 80
3 11/12/2025 22:17:49 0.02,-136.96 0.95,-132.94 458.82 80
4 11/14/2025 10:39:39 -0.02,-136.94 0.25,-138.22 145.24 80
5 11/15/2025 10:18:16 -0.02,-136.93 -0.76,-133.70 369.06 80
6 11/16/2025 22:40:16 0.01,-136.92 -0.48,-139.00 237.73 80
7 11/17/2025 22:24:13 0.01,-136.91 0.53,-134.48 276.48 80
8 11/19/2025 10:46:04 0.00,-136.88 0.65,-139.76 328.13 80
9 11/20/2025 10:24:41 -0.00,-136.86 -0.37,-135.23 185.34 80
10 11/21/2025 22:49:20 -0.01,-136.83 -0.86,-140.54 423.08 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 11/8/2025
SNOs_Map_GOES-18_NOAA-21_20251109.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 11/08/2025 in txt file.

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