Like every one in the known universe, Iran represents the date as day/month/year. Everyone, except the US who backwards talk do.
In Iran, it is the year 1385, and they don't use CE dates. Iran also rejects the Arab lunar calandar in favor of the Zoroastrian solar year, basing year zero on the hijira date 0 to define the beginning of the epoch.
Iran uses the original "arabic" numerals - not the so-called Arabic numbers in western texts - the numbers forms are in fact Indo-Persian, and they are 'house-proud' about them.
BTW: It was Indian astronomers who invented the zero, abstracted and transmitted to the Arab world by Persians writing treatises in Arabic. Crediting this invention to Arabs is like crediting Thomas More's De Optimo Reipublicae Statu deque Nova Insula Utopia to the Romans.