A Calendar That Makes Sense

What if every date always fell on the same day of the week? No more guessing, no more looking it up. Just simple, predictable dates.

Here's the Problem

Gregorian Calendar

March 15, 2024 → Friday
March 15, 2025 → Saturday
March 15, 2026 → Sunday
March 15, 2027 → Monday
Different every year.

Lunisolar Calendar

Triluna 15, 2024 → Solday
Triluna 15, 2025 → Solday
Triluna 15, 2026 → Solday
Triluna 15, 2027 → Solday
The same. Always.

Why Lunisolar?

📅

Perfectly Regular

Every month has exactly 28 days and 4 complete weeks. The 1st is always Solday. The 15th is always Solday. Always.

🧠

Easy to Remember

Thirteen months, simple Latin names: Monoluna (1st), Diluna (2nd), Triluna (3rd), and so on. The name tells you the number.

🔮

Plan Ahead Forever

Your birthday in 2050? Same weekday as this year. Holidays, anniversaries, schedules - they never shift around.

How It Works

The Lunisolar calendar follows the natural rhythm of the moon - 13 months of 28 days, plus one or two extra days at year's end.

13

Months

From Monoluna to Tredecoluna

28

Days per Month

Exactly 4 weeks, every time

7

New Weekdays

Solday through Saturnday

Every Month

Solday
Moonday
Marsday
Mercuday
Jupiday
Venday
Saturnday
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

Curious? Take it for a spin.