Know where the light will be before you get there.

Golden hour is the shoot. Missing it by twenty minutes because an app said "sunset 7:10" and did not mention the light was gone at 7:25 is the mistake you make once.

This is the sun calculator built for photographers, in one file that works with no signal. Pick the place and the date. It gives you both golden hours, both blue hours, sunrise and sunset to the minute, where on the compass the sun rises and sets, and, for every hour of the day, how high the sun is, which direction it is in, how long the shadows are and what the light is like.

WHAT IT DOES

• Golden hour (sun from -4° to +6°) and blue hour (-6° to -4°), morning and evening
• Sunrise, sunset, day length, solar noon and maximum sun height
• Compass direction of sunrise and sunset, so you know which way to face the couple
• Hour-by-hour sun height and direction with shadow length and a light description
• A chart of the sun's height across the day
• The week ahead (or 30 days) in one table
• 28 city presets, any coordinates, or your device's location

LIGHT ON YOUR SUBJECT

• Type the bearing a wall or facade points toward, or the bearing you look toward from a viewpoint
• Out: the exact windows when it is front-lit (sun within 40°), side-lit and backlit, and the minutes when front light overlaps golden hour, with a set-up-by time
• Saved spots: keep your locations with their subject bearing and reopen them in one click
• NOAA solar equations with refraction; accurate to about a minute anywhere on Earth

Who it's for

Wedding, portrait, landscape and real-estate photographers. Filmmakers scouting. Anyone who books shoots around the light.

What you get

• The planner (one .html file, runs in any browser, offline, on a phone too)
• A 2-page quick-start guide

Good to know

• One file. No install, no account, no subscription, no internet needed after download.
• Your data stays on your computer. Export a backup any time; import it on another machine.
• Works on Mac, Windows, Linux and iPad (open the file in Safari or Chrome).
• Instant download.

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