Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-21 and NOAA-19 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 5/31/2025
Index Date (NOAA-21) Time (NOAA-21) Lat,Lon (NOAA-21) SZA (NOAA-21 ) Date (NOAA-19) Time (NOAA-19) Lat,Lon (NOAA-19) SZA (NOAA-19 ) Distance(km) Time Diff (sec)
1 05/31/2025 03:54:33 71.31, 115.79 49.35 05/31/2025 03:55:10 71.30, 115.85 49.34 2.06 37
2 05/31/2025 04:45:16 -71.30, -76.86 130.67 05/31/2025 04:46:15 -71.28, -76.95 130.69 3.50 59
3 05/31/2025 05:36:03 71.31, 90.42 49.34 05/31/2025 05:37:06 71.33, 90.41 49.35 1.79 63
4 05/31/2025 06:26:53 -71.66,-102.88 130.30 05/31/2025 06:28:05 -71.61,-101.83 130.39 37.35 72
5 05/31/2025 07:17:44 71.88, 64.01 49.94 05/31/2025 07:18:53 71.81, 65.83 49.80 63.62 69

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 5/31/2025
SNOs_Map_NOAA-21_NOAA-19_20250531.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 05/31/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and NOAA-19