Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between GOES-17 and NOAA-21 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 7/21/2025
Index Date Time (GOES-17) GOES-17 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 07/22/2025 19:14:43 0.08, -89.51 0.59, -87.18 266.41 80
2 07/24/2025 07:33:50 -0.09, -89.47 0.60, -92.44 339.04 80
3 07/25/2025 07:17:45 -0.09, -89.47 -0.41, -87.91 177.34 80
4 07/26/2025 19:37:04 0.10, -89.51 -0.71, -93.23 423.13 80
5 07/27/2025 19:20:59 0.09, -89.52 0.30, -88.70 93.81 80
6 07/30/2025 07:24:02 -0.10, -89.50 -0.12, -89.44 6.91 80
7 08/01/2025 19:24:35 0.11, -89.56 -0.03, -90.22 75.24 80
8 08/02/2025 19:08:30 0.10, -89.56 0.99, -85.69 442.00 80
9 08/04/2025 07:27:38 -0.12, -89.54 0.22, -90.95 161.95 80

Figure of GOES-17 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 7/21/2025
SNOs_Map_GOES-17_NOAA-21_20250722.jpg

Download SNOs between GOES-17 and NOAA-21 since TLE EPOCH: 07/21/2025 in txt file.

Historical Predications of SNOs between GOES-17 and NOAA-21