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: 7/12/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 07/12/2025 22:24:57 -0.00,-137.00 0.53,-134.73 260.08 80
2 07/14/2025 10:46:45 -0.00,-137.00 0.66,-139.99 341.52 80
3 07/15/2025 10:25:20 -0.01,-136.99 -0.34,-135.46 174.28 80
4 07/16/2025 22:47:18 0.01,-136.99 -0.85,-140.77 431.07 80
5 07/17/2025 22:31:13 0.01,-136.98 0.15,-136.24 84.41 80
6 07/20/2025 10:34:17 -0.01,-136.95 -0.02,-136.98 4.12 80
7 07/22/2025 22:34:50 0.02,-136.91 -0.16,-137.76 96.50 80
8 07/23/2025 22:18:45 0.02,-136.89 0.85,-133.23 417.85 80
9 07/25/2025 10:37:53 -0.02,-136.86 0.35,-138.49 186.28 80
10 07/26/2025 10:21:48 -0.02,-136.84 -0.66,-133.96 328.04 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 7/12/2025
SNOs_Map_GOES-18_NOAA-21_20250713.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 07/12/2025 in txt file.

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