Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NPP and PACE Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 6/30/2025
Index Date (NPP) Time (NPP) Lat,Lon (NPP) SZA (NPP ) Date (PACE) Time (PACE) Lat,Lon (PACE) SZA (PACE ) Distance(km) Time Diff (sec)
1 07/02/2025 03:34:06 -79.87, -90.90 120.83 07/02/2025 03:34:48 -79.88, -91.04 120.83 2.97 42
2 07/02/2025 04:24:46 79.71, 77.98 58.87 07/02/2025 04:23:54 79.71, 77.92 58.90 1.19 52
3 07/04/2025 08:51:17 79.84, 10.11 59.31 07/04/2025 08:51:06 79.84, 10.16 59.31 0.81 11
4 07/06/2025 13:17:47 79.95, -57.50 59.72 07/06/2025 13:18:17 79.94, -57.40 59.69 1.92 30
5 07/06/2025 14:08:25 -79.75, 111.70 120.64 07/06/2025 14:07:22 -79.75, 111.76 120.62 1.33 63
6 07/08/2025 17:44:16 80.02,-124.85 60.12 07/08/2025 17:45:27 80.01,-124.74 60.06 2.16 71
7 07/08/2025 18:34:54 -79.83, 44.38 120.25 07/08/2025 18:34:32 -79.82, 44.43 120.25 1.32 22
8 07/10/2025 23:01:23 -79.90, -22.97 119.83 07/10/2025 23:01:42 -79.90, -22.95 119.84 0.45 19
9 07/10/2025 23:51:24 78.37, 155.81 57.68 07/10/2025 23:50:11 78.20, 154.84 57.67 29.02 73
10 07/13/2025 03:27:52 -79.98, -90.34 119.37 07/13/2025 03:28:52 -79.99, -90.40 119.39 1.40 60

Figure of NPP and PACE satellite orbits during SNOs since TLE Epoch: 6/30/2025
SNOs_Map_NPP_PACE_20250630.jpg

Download SNOs between NPP and PACE since TLE EPOCH: 06/30/2025 in txt file.

Historial Predications of SNOs between NPP and PACE