Feast of 'Alá (Loftiness), First day of the 19th month of the Baháʼí calendar (Baháʼí Faith) and first day of the Baháʼí Nineteen Day Fast

The Baháʼí calendar used in the Baháʼí Faith is a solar calendar consisting of nineteen months and four or five intercalary days, with new year at the moment of Northern spring equinox. Each month is named after a virtue, as are the days of the week. The first year is dated from 1844 CE, the year in which the Báb began teaching.

The Baháʼí Faith is a religion founded in the 19th century that teaches the essential worth of all religions and the unity of all people. Established by Baháʼu'lláh, it initially developed in Iran and parts of the Middle East, where it has faced ongoing persecution since its inception. The religion has 5–8 million adherents spread throughout most of the world's countries and territories.

Adherents of the Baháʼí Faith observe a sunrise-to-sunset fast annually for the nineteen days of the Baháʼí month of Loftiness. The practice is regarded as one of the most significant obligations of a Baháʼí, along with daily obligatory prayers. There are several exemptions to the fast, such as pregnancy or illness, and it only applies to those 15 to 70 years old.