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: 6/17/2025
Index Date Time (GOES-18) GOES-18 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 06/18/2025 10:34:04 -0.00,-137.00 -0.01,-136.92 8.76 80
2 06/20/2025 22:34:37 0.01,-137.01 -0.14,-137.71 79.49 80
3 06/21/2025 22:18:33 0.01,-137.00 0.85,-133.17 436.17 80
4 06/23/2025 10:37:41 -0.02,-136.99 0.32,-138.45 166.59 80
5 06/24/2025 10:21:37 -0.02,-136.98 -0.68,-133.91 348.64 80
6 06/25/2025 22:40:55 0.01,-136.97 -0.47,-139.23 257.42 80
7 06/26/2025 22:24:51 0.01,-136.96 0.53,-134.70 257.73 80
8 06/28/2025 10:43:58 -0.01,-136.93 0.69,-139.96 345.48 80
9 06/29/2025 10:27:53 -0.00,-136.92 -0.31,-135.43 169.66 80
10 06/30/2025 22:47:12 0.00,-136.91 -0.83,-140.75 436.67 80

Figure of GOES-18 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 6/17/2025
SNOs_Map_GOES-18_NOAA-21_20250618.jpg

Download SNOs between GOES-18 and NOAA-21 since TLE EPOCH: 06/17/2025 in txt file.

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