Synchronization Data
Real World						Middle-earth
			AD BC	Gregorian Julian	=				Second Age Third Age, King's Reckoning Third Age, Steward's Reckoning Shire Reckoning
Conversion Data
Real World						Middle-earth
			AD BC	Gregorian Julian					Second Age Third Age, King's Reckoning Third Age, Steward's Reckoning Shire Reckoning
Difference in days:
Difference in months: lunar months and days

Instructions:

• Enter all dates in the format Day/Month/Year.
• Invalid days may be entered without problem; for example Day -1 of October will be treated like Day 29 of September, while Day 35 of September will be treated like Day 5 of October.
• Invalid months may cause a problem
• Shire dates uses months 1 to 12 for the months Afteryule, Solmath, ..., Foreyule. Yule 1 is Day 1 of Month 0, Lithe 1 is Day 31 of Month 6, Midyear's Day is Day 32 of Month 6, Lithe 2 is Day 33 of Month 6 (except in leap years, when it goes to 34/06 and Overlithe becomes 33/06). Other M-e calendars use a similar system; for example, the extra day between month 9 and month 10 in the Steward's Reckoning is coded as 31/09.
• Negative Years will be treated the same way the flag AD/BC is treated. In other words, Year -1 AD is Year 1 BC, and Year -2 BC is Year 2 AD. However, there was no Year 0, so Year 1 BC is followed by Year 1 AD. The Middle-earth Calendars include Year 0.
• Current Implementation: only computation of number of days between two Dates in Gregorian or Julian Calendars or within Middle-earth Calendars is implemented. Ignore all conversion from Real to Middle-earth and Middle-earth to Real

Links:

• Return to Alberto Monteiro's home page
• Return to Alberto Monteiro's Tolkien home page
• Hard science fiction tools
• Calendar Conversions, from the Institut de Mécanique céleste et de calcul des éphémérides

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Please send any comments to albmont@centroin.com.br

Created: 1998-10-13

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