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Planetary Opposition

Neptune at Opposition 2026

Date & Time

UTC

Overview

September 25, 2026. Neptune at its brightest (~7.8 mag) — telescope required. Best time of year to observe the outermost planet.

Data Source

Solstice and equinox dates calculated from JPL DE440 ephemeris (the same planetary/lunar ephemeris used by NASA). Meteor shower peak dates and ZHR values follow the International Meteor Organization (IMO) annual calendar. Planetary event data from NASA Horizons system.

Plan Your Observation

Use these free tools to prepare for the event:

☀️ Solar & Golden Hour Calculator🌆 Twilight Calculator🌙 MoonSync — Moon Phase & Interference🔭 Telescope FOV Calculator
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