4 intercalary days of gifts and charity before the month of the Fast. Ayyám-i-Há is a period of intercalary days in the Baháʼí calendar, when Baháʼís celebrate the Festival of Ayyám-i-Há. The four or five days of this period are inserted between the last two months of the calendar (Mulk and ʻAláʼ). The length of Ayyám-i-Há varies according to the timing of the following vernal equinox so that the next year always starts on the vernal equinox. 2026 has five days of Ayyám-i-Há: from sunset on Tuesday, February 24, to sunset on Sunday, March 1. Wiki link Dates computed on the Badí' calendar from Tehran's equinox, sunsets and new moons (before 2015, the West's fixed dates). Text: Wikipedia (CC BY-SA).