Planetary Hour Calculator
Calculate planetary hours (hora planetaria) for any location and date. Essential for timing magical operations, elections, and rituals according to traditional astrological correspondences.
What You Get
- Accurate planetary hours for any location (GPS or manual entry) and date
- Both diurnal (sunrise to sunset) and nocturnal (sunset to sunrise) hours
- Current hour highlighted with real-time countdown to next hour
- Planetary ruler, correspondences (metal, incense, color, day, sigil)
- 7-day forecast with copyable schedule
- Uses Swiss Ephemeris precision algorithms (same as NASA)
- Works offline after first load — no signup, no tracking
| Period | Start | End | Ruler | Duration |
|---|
Free Web Tool vs Premium Android App
| Feature | Free Web | Astral Lab App |
|---|---|---|
| Planetary hours for any location/date | ✓ | ✓ |
| Current hour with live countdown | ✓ | ✓ |
| 7-day forecast | ✓ | ✓ |
| Planetary correspondences (metal, incense, etc.) | ✓ | ✓ |
| Natal chart + transits + progressions | ✗ | ✓ |
| Synastry (relationship charts) | ✗ | ✓ |
| Arabic Parts & fixed stars | ✗ | ✓ |
| Electional astrology finder | ✗ | ✓ |
| Works 100% offline | ✗ | ✓ |
| Price | Free | $6.50 |
"The web calculator showed me exactly when to launch my sigil. Astral Lab app added the natal chart context — I could see the planetary hour ruler was conjunct my natal Mercury. The electional finder saved me hours of manual calculation."
Free vs Premium
Are the calculations accurate?
Does the premium app need internet?
Is this a subscription?
🪐 Master the Art of Astrological Timing
Planetary hours are the foundation. The Astral Lab Android app gives you: full natal chart (VSOP87/ELP2000), transits, progressions, synastry, Arabic Parts, electional finder, and exportable charts — all offline.
100% offline · No ads · No tracking · One-time payment · 7-day guarantee
Take this offline with the app
This tool runs in your browser and nothing is saved after you close the tab. The app keeps a library, a journal and works in aeroplane mode. One-time payment, no subscription, no ads.
✦ Lunar Phase Calculator
Moon, phases and planetary hours on real data Lunar Phase Calculator computes phases, illumination and planetary hours from ephemeris data, not approximations. Works with no signal at all.
One-time payment · no ads · no subscription
✦ Want the written method instead?
The free tool is the surface. This is the system behind it, in writing, to keep and re-read between sessions.
Codex Chaoticus: Complete Treatise on Chaos Magick
PDF · one-time payment · no subscription