Yared572/project-bahire_hasab_

# Bahire Hasab - Ethiopian Calendar Calculator ## Table of Contents - Introduction - About the Ethiopian Calendar - Calendar Structure - Key Concepts - Calculation Methods - Conversion Formulas - Important Dates an Feasts - Usage Examples - References --- ## Introduction **Bahire Hasab** (ባሕረ ሃሳብ) is the traditional Ethiopian system of chronology and calendar calculation. The term literally means "Sea of Thought" or "Ocean of Knowledge" in Ge'ez, reflecting the depth and complexity of the calculations involved. This system has been used for centuries by the Ethiopian Orthodox Tewahedo Church and the general population to determine: - Religious feast days and fasting periods - Easter (Fasika) dates - Beginning of the year (Enkutatash) - Conversion between Ethiopian and Gregorian calendars - Agricultural seasons and planning --- ## About the Ethiopian Calendar The Ethiopian Calendar (የኢትዮጵያ ዘመን አቆጣጠር) is the principal calendar used in Ethiopia and Eritrea. It is approximately **7-8 years behind** the Gregorian calendar. ### Key Characteristics: - **13 months**: 12 months of 30 days each + 1 short month (Pagume) of 5-6 days - **Year structure**: 365 days (366 in leap years) - **New Year**: Meskerem 1 (September 11 or 12 in Gregorian calendar) - **Leap year cycle**: Every 4 years (similar to Gregorian) --- ## What is Bahire Hasab? Bahire Hasab is a complex computational system that includes: 1. **Abakte** (ዐባቅተ) - The Four Evangelists cycle 2. **Metke** (መትቅዕ) - The date of creation 3. **Wengelawi** (ወንጌላዊ) - The gospel reading cycle 4. **Tewsak** (ተዋሳክ) - The lunar cycle calculations 5. **Nenewe** (ነነዌ) - Calculation of Lent beginning 6. **Fasika** (ፋሲካ) - Easter calculation (most important) --- ## Calendar Structure ### The 13 Months | # | Ethiopian Name | Days | Gregorian Equivalent | |---|----------------|------|---------------------| | 1 | Meskerem (መስከረም) | 30 | Sep 11 - Oct 10 | | 2 | Tikimt (ጥቅምት) | 30 | Oct 11 - Nov 9 | | 3 | Hidar (ኅዳር) | 30 …