Anno Nortone Converter

The Anno Nortone (AN) calendar is used in the Micras geofiction community. Years are counted after the death of Norton (Ab Nortone, AN; Greek: meta thanaton Nortou). His year of death is AN 0. The first year after his death is AN 1. Years before his death are counted as before Norton (bN; Greek: pro thanatou Nortou).

Emperor Norton the Undying (Nurtan Adzalntse; died in year 0 AN) was the last emperor of Khaz Modan, believed to have died in the collapse of that empire. His death presaged the birth of Raynor I and the foundation of Shireroth 79 years later. The Norton calendar only became standard some 1600 years after his death.

Core relationships:

• 1 Gregorian month = 1 AN year
• 1 Gregorian day = a range of 12 AN days
• AN months I-XIV = 24 days each
• AN month XV = 0-36 days (varies by year type)

Year Types:

Gregorian Days	AN Days	Type
31	372	Long
30	360	Normal
29	348	Qarbinion
28	336	Biternion

Zodiac Cycle: Each AN year is named after a zodiac sign based on its corresponding Gregorian month. January years are "Year of Viviantiana", February years are "Year of Biternion" (or Qarbinion in leap years), etc.

Regional overlays: The core converter is nation agnostic. Local month names and optional regional overlays, such as the New Alexandrian zodiac, can be shown when useful without changing the underlying Norton calendar date.

Epoch: AN 0 = January 1880 CE

Micras Community:

• Norton calendar on MicrasWiki
• MicrasWiki
• Micras Discord
• Hub.MN Forum
• Classic AN calculator

Version 2.2 - June 2026

• Precision fixes: Midday now rounds down, invalid AN month days are rejected, and bN years are supported.
• Timezone-safe tools: Duration and relative-date calculations now use calendar dates without local timezone drift.
• Nation-agnostic default: Regional zodiac output is optional and clearly labelled.
• Mobile polish: Output rows, share links, date controls, and action groups stack cleanly on small screens.

Version 2.1 - January 2026

• New Alexandrian Zodiac: Shows zodiac sign (with Wechua name and element) in Today card and conversion results

Version 2.0 - January 2026

• Auto-convert: Dates now convert automatically as you type (no need to click Convert)
• Today buttons: Quick buttons to set any date input to today's date
• Keyboard shortcuts: Press Enter to convert when focused on inputs
• Year type hints: Shows year type info (Long/Normal/Qarbinion/Biternion) when entering AN dates
• Smart validation: Day input highlights if invalid for current month/year type
• Day counts in dropdowns: Month selector shows day count per month
• Better copy feedback: Buttons change to "Copied!" with visual confirmation
• Reset button: Quickly reset all inputs to today's date
• Remember sections: Expanded/collapsed sections persist across page reloads
• Accessibility: Full ARIA labels, keyboard navigation, screen reader support
• Mobile improvements: Touch-friendly 44px tap targets, better mobile layout
• Smoother animations: Improved collapse/expand transitions

Version 1.3 - January 2026

• Added date format toggle (MM/DD/YYYY vs DD/MM/YYYY) for Gregorian date output
• Setting persists in browser storage

Version 1.2 - January 2026

• Fixed redundant Roman numeral display when using Roman Numerals preset
• Now shows "18 VII 1752" instead of "18 VII (VII) 1752" when Roman is selected

Version 1.1 - January 2026

• Added 6 new tools: URL parameters, date picker, year overview table, duration calculator, relative date calculator, and text extraction
• Added community links (MicrasWiki, Discord, Hub.MN Forum)
• Updated About section with accurate Emperor Norton lore