Cronos

Welcome to Cronos

Let's set up your world's calendar

Months of the Year

Add each month your world uses — or start from a preset and customise from there.

Start from preset:

Month Name & Days

Name Days

Days of the Week

Name every day of your week. The first day will be the start of each week on the calendar.

Days per Week

Look & Feel

Choose your preferred theme and accent colour. You can change these any time in Settings.

Theme

Accent Colour

Cronos

Jump to Year

Calendars

Today & Tomorrow

⚔ Current Day

🕐 Time of Day

Midnight

New Event

Title

Month

Day

Year

Time (optional)

Notes

Colour

Multi-day Arc

Event spans multiple days

Arc ends on

Month

Day

Year

Repeat

Interval

Event Details

＋ New Calendar

Calendar Name

Starting Preset

⚙ Calendar Settings

Month Name & Days

Name Days

Days per Week

7 days in a week

Day Names First day = start of week

Define the seasons of your world. Each season shows as a coloured banner on the month view and day view.

Configure the moons of your world. Each moon has a cycle length and a reference New Moon date — the engine calculates the phase for every calendar day.

Theme

Automatically matches your macOS / system appearance.

Accent Colour

⚠ Reset Everything

This cannot be undone.

This will permanently delete all events, all calendar settings, all days, all months, and all preferences. The app will return to its first-launch state.

Type RESET to confirm:

📅 Install Cronos as an app