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: 5/18/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 05/19/2025 22:34:13 0.01,-136.99 -0.15,-137.60 70.13 80
2 05/20/2025 22:18:09 -0.00,-136.98 0.87,-133.07 445.49 80
3 05/22/2025 10:37:18 0.00,-136.96 0.33,-138.35 157.86 80
4 05/23/2025 10:21:15 -0.00,-136.95 -0.70,-133.82 356.97 80
5 05/24/2025 22:40:32 0.02,-136.94 -0.49,-139.13 249.69 80
6 05/25/2025 22:24:29 0.02,-136.93 0.54,-134.61 264.72 80
7 05/27/2025 10:43:38 -0.02,-136.90 0.65,-139.88 340.15 80
8 05/28/2025 10:27:34 -0.01,-136.88 -0.33,-135.35 173.84 80
9 05/29/2025 22:46:51 0.01,-136.85 -0.86,-140.65 433.97 80
10 05/30/2025 22:30:47 0.01,-136.83 0.18,-136.13 79.92 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 5/18/2025
SNOs_Map_GOES-18_NOAA-21_20250519.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 05/18/2025 in txt file.

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