Pluto Time Calculator

Free online planetary hours calculator using the ancient Chaldean order. Find favorable times for love, career, and spiritual practices based on planetary rulership throughout the day.

Calculator
Today's Hours

Location & Date

Sun Times (Optional)

Leave blank to auto-calculate based on location

Today's Planetary Hours

100% browser-based No upload to server Free to use

Frequently Asked Questions About Online Calculators

Do I need to know my exact latitude and longitude for the Pluto Time Calculator to work?

No, you don’t. While the calculator accepts precise coordinates for maximum accuracy, the “Today’s Hours” tab lets you enter any major city name—like “Los Angeles” or “Sydney”—and it will pull the correct timezone and approximate coordinates for you. For exact astrological work, using latitude/longitude is more precise, but for daily planning, the city name is more than enough.

Can I use the planetary hours calculator for past or future dates?

Yes. Change the date field to any past or future date, and the calculator will rebuild the planetary hours for that specific day. This is extremely useful for retroactive analysis (“Why did that meeting go so badly last Tuesday?”) or forward planning (“Which day next week has the most Jupiter hours for my business launch?”). The Chaldean order calculation works exactly the same regardless of date.

What’s the difference between planetary hours and regular 60-minute hours?

Regular clock hours are fixed at 60 minutes. Planetary hours vary in length because they’re calculated by dividing total daylight (sunrise to sunset) into 12 equal segments, and then dividing total night (sunset to next sunrise) into another 12 equal segments. A planetary hour in summer can last 75 minutes; in winter, it might be only 45 minutes. The calculator handles this math automatically—you just see the actual clock times.

Is the Pluto Time Calculator free, or will it ask for payment later?

It is completely free, with no hidden paywalls or “pro” upgrades. The calculator runs entirely in your browser using client-side JavaScript, so there’s no server cost for the maintainer. You can use it as many times as you want, for any location or date, without ever entering a credit card or creating an account.

How accurate is this for spellwork or planetary magic rituals?

Accuracy depends on your sunrise/sunset data. For general spiritual or magical use, the auto-calculated sun times based on your latitude/longitude are more than sufficient. For ceremonial magic where exact degrees matter, advanced practitioners sometimes input manually verified sunrise/sunset from ephemeris tables. But for 95% of users—including Wiccan, pagan, and Western esoteric traditions—the auto-calculation is the standard.

Does this tool work on mobile phones? Do I need to install an app?

No installation needed. The Pluto Time Calculator is a web-based tool that works perfectly on any smartphone, tablet, or desktop browser. Just open the page, enter your location, and you’ll have a full planetary hour schedule in seconds. There is no app to download, no storage space used, and no background processes—just a clean, mobile-responsive interface that works like a native app without any of the permissions or privacy risks.

Guide