Custom Calendars

Not every story runs on the Gregorian calendar. Scriptorium lets you define the calendar your world actually uses — its months, weekdays, eras, even the length of its days — and everything date-related follows along.

Built-in presets

Pick a preset in Project Settings → Calendar:

• Gregorian — the real-world calendar
• Lunar — a moon-based calendar
• Simple — a minimal starting point for building your own

Building a custom calendar

Everything is configurable:

• Months — names, day counts, and leap-year rules
• Weekdays — names and cycle length (six-day weeks? ten-day weeks? fine)
• Eras — named eras counting forward or backward (e.g. “Before the Fall” / “After the Fall”), each with its own start
• Time itself — hours per day and minutes per hour
• Epoch weekday — which weekday day 1 falls on
• Display formats — how dates are written throughout the app (four configurable format strings)
• Timeline end day — an optional upper bound for your world’s history

Where your calendar applies

• Timelines — the axis, header labels, and all date math use the active calendar
• Date pickers — entity date fields render a calendar-aware grid with your months and weekdays
• Entity dates — birth/death, founded/destroyed, and any other date fields

Note

Calendars are shared across your projects, so a series set in the same world can reuse one calendar. Entity dates are stored in a calendar-independent form, so refining your calendar doesn’t corrupt existing dates.