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: 7/9/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 07/10/2025 10:19:04 -0.02,-137.00 -0.69,-133.94 348.11 80
2 07/11/2025 22:41:02 0.03,-137.00 -0.46,-139.26 257.37 80
3 07/12/2025 22:24:58 0.03,-137.00 0.55,-134.73 258.47 80
4 07/14/2025 10:44:05 -0.04,-136.99 0.65,-140.00 343.09 80
5 07/15/2025 10:28:00 -0.03,-136.98 -0.35,-135.46 172.50 80
6 07/16/2025 22:47:19 0.04,-136.97 -0.79,-140.78 433.86 80
7 07/17/2025 22:31:14 0.04,-136.96 0.22,-136.25 81.34 80
8 07/20/2025 10:31:37 -0.05,-136.92 -0.02,-136.98 7.28 80
9 07/22/2025 22:34:50 0.06,-136.88 -0.15,-137.76 101.34 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 7/9/2025
SNOs_Map_GOES-18_NOAA-21_20250710.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 07/09/2025 in txt file.

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