| Central figures | |
| Key scripture | |
| Kitáb-i-Aqdas · Kitáb-i-Íqán |
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| Institutions | |
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Administrative Order |
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| History | |
| Notable individuals | |
|
Shoghi Effendi |
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| See also | |
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Symbols · Laws |
Ayyám-i-Há refers to a period of four or five intercalary days in the Bahá'í calendar, where Bahá'ís celebrate the Festival of Ayyám-i-Há.[1] The four or five days occur in between the 18th and 19th months of the calendar from February 26 to March 1 and allow for the Bahá'í calendar to be synchronized with the solar year with regular years of 365 days, and leap years of 366 days.[2]
The Báb, the founder of the Bábí Faith, instituted the Badí‘ calendar in the Persian Bayán with 19 months of 19 days each and a period of intercalary days to allow for the calendar to be solar. The introduction of intercalation marked an important break from Islam, as under the Islamic calendar the practice of intercalation had been specifically prohibited in the Qur'an.[3] The Báb did not, however, specify where the intercalary days should go.[3] Bahá'u'lláh, who claimed to be the one foretold by the Báb, confirmed and adopted the Badi calendar in the Kitáb-i-Aqdas, his book of laws.[3] He placed the intercalary days before the fasting month of `Alá, the nineteenth and last month,[4] and gave the intercalary days the name "Ayyám-i-Há" or "Days of Ha".[3][4]
The nineteen months of the Bahá'í calendar are named after the attributes of God.[5] Ayyám-i-Há, which means the "Days of Há" — Há is the Arabic letter corresponding to the English H — commemorates the transcendence of God over his attributes, since its name "Há" has been used as a symbol of the essence of God in the Bahá'í holy writings.[3][6] Under the Arabic abjad system, the letter Há has the numerical value of five, which is equal to the maximum number of days in Ayyam-i-Há.[3]
During the Festival of Ayyám-i-Há Bahá'ís are encouraged to celebrate God and his oneness by showing love, fellowship and unity.[3] In many instances Bahá'ís give and accept gifts to demonstrate these attributes, and it is sometimes seen as a "Bahá'í Christmas" held two months after the Christian holiday.[3] It is also a time of charity and goodwill and Bahá'ís often participate in various projects of a humanitarian nature.[7]