01. Right Now
A live snapshot of the current moment in both systems — so the conversion clicks before you read another word.
02. Reading the Interface
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C
The Clock
Outer Ring: Legacy time context (12, 18, 0, 6).
Inner Ring: Metric Hours (0–10).
Solar Markers: Approximate sunrise/sunset, calibrated for ≈ 40° latitude. Near the equator the drift collapses to almost zero; near the polar circles it becomes extreme. Treat as illustrative, not predictive.
Work / Rest Arcs: Faint shaded bands marking suggested productive hours (≈ 33% – 71% of the metric day, roughly 8 am – 5 pm legacy) and rest hours (≈ 92% – 25%, roughly 10 pm – 6 am). These are cultural defaults, not part of the system itself.
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O
Orbit View
Heliocentric (top-down) visualization. Color-coded arcs show seasons. Zodiac glyphs are placed in their true sky direction — opposite Earth's orbital position for the month, since that's where the Sun appears against the constellations from Earth's view. A gold "SUN IN [SIGN]" ray points to the current constellation. Includes approximate lunar phase (single-epoch + mean synodic period) and an interactive hover for both orbit dates and zodiac signs.
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5d
The Metric Week
Each month is built from 5-day weeks — six full weeks make the 30-day core, with any cardinal (solstice/equinox) or intercalary day appended beyond the grid (see Year Mechanics). The weekdays are named from Latin ordinals:
Prim (1st), Seco (2nd), Tert (3rd), Quad (4th), Quin (5th).
QUAD and QUIN serve as the metric weekend.
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SIM
Simulator Mode
Flip the LIVE / SIM toggle in the header to freeze the clock and scrub through any moment in the metric year. Two scrubbers appear: Time of Day (under the clock) and Day of Year (under the orbit). You can also click any day on the calendar to jump to it.
03. Unit Conversion
| Metric Unit |
Value |
Standard Equiv. |
| 1 Day | 10 Hours | 24 Hours |
| 1 Hour (Deciday) | 100 Minutes | 2.4 Hours (144 min) |
| 1 Minute (Milliday) | 100 Seconds | 1.44 Minutes (86.4s) |
| 1 Second | Base Unit | 0.864 Seconds |
04. Cosmic Alignment
The calendar is physically anchored to the March (vernal) equinox — the moment the Sun crosses the celestial equator heading north. This is why the calendar exists at all; it's not arbitrary.
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Equinox Anchor (Month 0 = Aries)
The year begins at the March equinox (~Mar 20), the First Point of Aries — the origin of the sky's coordinate system. So Month 0 maps to Aries and the zodiac runs in its canonical order (Aries → Pisces). The HE year number ticks over at this moment — not on January 1. Month 0 is mid-spring (North) or mid-autumn (South).
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Solar Placement
The 12 Metric Months correspond to the 12 zodiacal sectors (30° each) of Earth's orbit. The three interior cardinal events fall on Day 31 of months 3, 6, and 9 (June Solstice, September Equinox, December Solstice); the March Equinox is the year's boundary. Each month also keeps a familiar Gregorian name — Month 0 = "March" — for easy reference. In the orbit view the zodiac glyph for each month is drawn on the FAR side of the Sun from Earth — the actual direction the Sun appears against the stars from Earth's view at that time of year (heliocentric convention).
05. Philosophy
Why two number-systems in one app? Because time-of-day and time-of-year are different problems, and the right base for each is different.
Decimal Time (Day)
The day is a fixed constant. We divide it by 10, then 100, then 100. No more arbitrary 12s and 60s — and percentages of the day become trivial to read.
Dodecimal Year (Calendar)
The orbit is geometric. 12 months map perfectly to 4 seasons × 3 months and to the 12 zodiacal sectors (30° each). Keeping 12 months is not a concession to tradition — it is the most astronomically natural division of the solar year.
06. Year Mechanics
How the year counts up, and how 365.24 real days fit into a 360-day decimal grid.
Human Era (HE) Year Count
- Epoch: 10,000 BCE (approximate start of the Neolithic Revolution — when humans began farming and settled civilization took root).
- Conversion: HE = CE + 10,000. So 2026 CE = 12026 HE.
- Why: Eliminates negative years for prehistoric dates. The pyramids were built around 2500 BCE = 7500 HE — same axis as today, no sign-flips.
Intercalary Days
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The Gap:
12 months × 30 days = 360. The solar year has 5–6 extra days that don't fit the decimal grid.
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Cardinals:
Four of the extra days are the solstices/equinoxes — Day 31 of months 3, 6, 9, and 12. The first three sit inside the year; the fourth (the March equinox, Day 31 of Month 12) is also the year-boundary day. One cardinal per season, spread naturally.
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Bridge Day:
The remaining residual day every year is Day 32 of Month 3 ("Bridge Day"), placed in the longest quarter of the orbit (the Northern-spring stretch) rather than clustered at year-end.
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Leap Day:
When a year spans a Gregorian Feb 29, one further day — Day 32 of Month 6 ("Leap Day") — keeps the calendar locked to the equinox. Because Feb 29 falls before the March equinox, this lands in the metric year that began the previous March, not necessarily the Gregorian leap year itself. It's calendrical residue, not an astronomical event, so it's named plainly.