Rugs dated with a year of the Hejira can be converted to the Christian equivalent. For an exact date, divide the Hejira year by 33.7, subtract the result from the original date and then add 622. For an approximate estimate, simply add 583 to the Hejira date. Herati Pattern: Also called the mahi or fish pattern. As its name implies this floral pattern is supposed to have originate in east Persia. Consists of a repeat of a flower head bracketed by two serrate-edged lanceolate leaves. Probably the most frequently used of all Oriental floral designs. Hunting Carpet: A classical Persian carpet pattern depicting a hunt and usually including several different species of animals- lions, antelopes, hares, bears- scattered among the huntsmen.