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: 5/22/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 05/23/2025 10:21:15 0.00,-137.00 -0.73,-133.83 362.22 80
2 05/24/2025 22:40:33 -0.00,-137.00 -0.46,-139.14 242.50 80
3 05/25/2025 22:24:28 -0.00,-137.00 0.51,-134.60 273.03 80
4 05/27/2025 10:46:19 -0.00,-136.98 0.62,-139.89 330.14 80
5 05/28/2025 10:24:54 -0.01,-136.98 -0.35,-135.35 184.75 80
6 05/29/2025 22:46:52 0.01,-136.96 -0.79,-140.67 421.70 80
7 05/30/2025 22:30:48 0.02,-136.95 0.19,-136.13 93.07 80
8 06/02/2025 10:33:54 -0.02,-136.92 -0.04,-136.89 4.39 80
9 06/04/2025 22:34:27 0.03,-136.89 -0.18,-137.66 87.80 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 5/22/2025
SNOs_Map_GOES-18_NOAA-21_20250523.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 05/22/2025 in txt file.

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