Plan any place, any time, before you stand there.

Always shown at the top.

Sun and Moon path chart.

Milky Way visibility and direction.

Find the next dark, moonless night when the Milky Way core is well placed.

Local rise, set, brightness and best viewing time for the bright planets tonight.

Paints the light-pollution glow dome a city raises above your horizon.

Comets bright now or predicted to brighten, with a magnitude and Sun-elongation forecast.

Offline NGC, IC, Messier, Caldwell, nebula, galaxy, and cluster search from OpenNGC.

Tonight's bright, shootable nebulae and galaxies from the offline OpenNGC catalog.

Every solar and lunar eclipse from 1901 to 2100, with local circumstances for your location.

Recommended camera settings for the Moon at any phase and altitude.

This year's famous meteor showers with predicted ZHR curves, radiant altitude and moon interference.

Pick a famous mountain and see whether low cloud may sit below the viewpoint.

Yosemite Horsetail Fall solar and moonlit Firefall geometry, sky clarity and flow hints.

Night cloud layers crossed with dark window, Moon, and model agreement.

Interactive side-view of cloud layers along the sunrise or sunset horizon.

Transparency, haze, lens-dew/fog risk, wind steadiness, and clear-night comparison.

Whether coming sunsets and sunrises are likely to produce vivid red or orange cloud glow.

Upcoming Sun/Moon rise and set time, bearing, low cloud, and haze checks.

Best visible windows while the Sun or Moon is above your horizon.

Hourly forecast table with model selection and photographer-focused weather indices.

Weather-model review for a chosen hour range.

Tide height curve with high/low times and sea state.

Official tide stations with predictions and live level where available.

Find when a tide height meets golden hour, sunrise, moonset, or another timing target.

NWS severe weather warnings and watches for your area.

Recent solar imagery and activity.

Recent flare history and forecast.

Bz, speed, and density from NOAA spacecraft.

Observed and forecast geomagnetic activity.

27-day geomagnetic activity outlook.

Hourly geomagnetic storm strength from Kyoto Dst.

Half-hourly geomagnetic activity index for a sharper real-time storm read.

Current R, S, and G space-weather scale levels.

Latest official space-weather alerts and warnings.

All available SWPC model and space-weather animation feeds.

WSA-Enlil heliosphere model animation.

Reading/Met Office solar-wind forecast model.

Local aurora-viewing probability and the live OVATION oval.

Current satellite position, direction, altitude, range and speed.

Upcoming visible satellite passes with brightness filtering.

Solar and lunar satellite transit opportunities near your location.

Upcoming launches with twilight-plume or night-trail shooting forecast for your location.

Alerts you when a plane is about to cross the Sun or Moon, with a short walk to the exact spot.

Hyperfocal distance and near/far sharp limits.

Compensated shutter speed for any ND filter.

EV and equivalent exposure solver.

Angle of view, 35mm equivalent and framing.

Frame count and rotation step for a pano.

Frames, clip length and storage.

Where the Sun or Moon will be, step by step.

Daily same-time positions for one Sun, Moon, planet or comet sequence.

Plan a moving-camera timelapse from distance, cadence, and frame rate.

Frame count and focus distances for stacking.

Longest shutter before stars trail.

Polar-scope clock and single-star alignment.

Real-time incident light reading from the device sensor.

Real-time Sun-aware portrait lighting and camera-move guide.