Calendar Scheme Codes
| Calendar Schemes | ||||
|---|---|---|---|---|
| Code | Name | Status | Script | Notes | 
| ay | Astronomical Year Calendar | Default | scripts/julian_hybrid.hcs | Hybrid of "j" and "g". | 
| c | Chinese | Default | scripts/chinese.hcs | |
| cath | Catholic Hybrid | Proposed | Hybrid calendar used in regions that changed from Julian to Gregorian on 15th October 1582. | |
| ce | Common Era | Proposed | Hybrid of "jce" and "gce" | |
| eng | English Hybrid | Default | scripts/julian_hybrid.hcs | |
| er | English Regnal | Default | scripts/english_reg.hcs | |
| fr | French Republican | Default | scripts/french_rep.hcs | Includes year zero | 
| g | Gregorian | Default | scripts/julian.hcs | Includes year zero | 
| gce | Gregorian Common Era | Default | scripts/ce-bce.hcs | |
| h | Hebrew | Default | scripts/hebrew.hcs | Includes year zero | 
| i | Islamic Tabular | Default | scripts/islamic.hcs | Includes year zero | 
| I.Ia | Islamic Tabular Ia | Script | example/islamic-Ia.hcs | See website | 
| I.Ic | Islamic Tabular Ic | Script | example/islamic-Ic.hcs | See website | 
| I.IIIc | Islamic Tabular IIIc | Script | example/islamic-IIIc.hcs | See website | 
| I.IVa | Islamic Tabular IVa | Script | example/islamic-IVa.hcs | See website | 
| I.IVc | Islamic Tabular IVc | Script | example/islamic-IVc.hcs | See website | 
| if | Islamic Fātimid | Default | scripts/islamic.hcs | Includes year zero | 
| ims | Islamic Microsoft Hijri | Default | scripts/islamic.hcs | Includes year zero | 
| j | Julian | Default | scripts/julian.hcs | Includes year zero | 
| ja | Julian Annunciation | Default | scripts/julian.hcs | Includes year zero | 
| jap | Julian Annunciation Pisa | Default | scripts/julian.hcs | Includes year zero | 
| jce | Julian Common Era | Default | scripts/ce-bce.hcs | |
| JD | Julian Day | Script | example/day-counts.hcs | Only a text conversion (includes a fixed decimal value) | 
| jdn | Julian Day Number | Default | scripts/jdn.hcs | Internal representation | 
| jeast | Julian Easter | Proposed | Use weekday to avoid ambiguity | |
| jn | Julian Nativity | Default | scripts/julian.hcs | Includes year zero | 
| MJD | Modified Julian Day | Script | example/day-counts.hcs | |
| RD | Rata Die | Script | example/day-counts.hcs | |
| scot | Scottish Hybrid | Default | scripts/julian_hybrid.hcs | |
| se | Julian Spanish Era | Default | scripts/julian.hcs | Includes year zero | 
| sr | Scottish Regnal | Default | scripts/scottish_reg.hcs | |
| swed | Swedish Hybrid | Proposed | The calendar used by Sweden when changing from Julian to Gregorian. | |
| Grammar Definitions | ||||
|---|---|---|---|---|
| Code | Description | Status | Script | Notes | 
| c | Chinese scheme | Default | scripts/chinese.hcs | |
| d | Simple Day Count | Default | scripts/day-counts.hcs | |
| er | English Regnal | Default | scripts/english_reg.hcs | |
| fr | Basic French Republican scheme | scripts | example/french_rep.hcs | |
| g | Gregorian scheme | Default | scripts/julian.hcs | Inherits from "j" | 
| h | Hebrew schemes | Default | scripts/hebrew.hcs | |
| i | Islamic schemes | Default | scripts/islamic.hcs | |
| hy | Julian - Gregorian hybrids | Default | scripts/julian_hybrid.hcs | |
| j | Basic Julian and Gregorian schemes | Default | scripts/julian.hcs | |
| j.sh | Shifted Julian and Gregorian schemes | Default | scripts/julian.hcs | |
| jce | Historical Julian and Gregorian schemes | Default | scripts/ce-bce.hcs | |
| lit | Christian Liturgical Weeks | Default | scripts/liturgical.hcs | |
| sr | Scottish Regnal | Default | scripts/scottish_reg.hcs | |
| Vocabulary (vocab) Definitions | ||||
|---|---|---|---|---|
| Code | Name | Status | Script | Notes | 
| ce | Historic Era | Default | scripts/ce-bce.hcs | |
| clmon | Leap month | Default | scripts/chinese.hcs | |
| cyear | Year names | Default | scripts/chinese.hcs | |
| er | English Monarchs | Default | scripts/english_reg.hcs | |
| frcomp | Complementary Days | Default | scripts/french_rep.hcs | For French Republican calendar | 
| frdd | Decade Day | Default | scripts/french_rep.hcs | For French Republican calendar | 
| frm | Month names | Default | scripts/french_rep.hcs | For French Republican calendar | 
| hm | Month names | Default | scripts/hebrew.hcs | For Hebrew calendar | 
| hw | Weekday names | Default | scripts/hebrew.hcs | For Hebrew calendar | 
| im | Month names | Default | scripts/islamic.hcs | For Islamic calendar | 
| iw | Weekday names | Default | scripts/islamic.hcs | For Islamic calendar | 
| jajg | Scheme names | Default | scripts/julian_hybrid.hcs | Used for Julian/Gregorian hybids | 
| lit | Liturgy Weeks | Default | scripts/liturgical.hcs | Week starts Monday = 1 | 
| m | Month names | Default | scripts/julian.hcs | |
| on | Scheme names | Default | scripts/english_reg.hcs | Old/New style | 
| part | Part of Reign Year | Default | scripts/english_reg.hcs | First/Second part | 
| sr | Scottish Monarchs | Default | scripts/scottish_reg.hcs | |
| w | Weekday names | Default | scripts/base.hcs | |