Bahá'í calendar (Badíʿ calendar) Bahá'í calendar A solar ritual and civil calendar of the Bahá'í community, organized into 19 months of 19 days, beginning at the vernal equinox and rooted in 19th-century Bábí and Bahá'í history.
Bengali calendar (Bangla calendar) Bengali calendar A solar calendar used in Bengal and officially in Bangladesh; organizes the year into twelve months and six seasons, and marks Pohela Boishakh as the New Year in mid-April.