In Iran, short dates are written in "year/month/day" from; for example: 1992/10/16
۱۳۸۹/۵/۱۶
Long dates start with day, followed by month and ended with year (although one should bear in mind that Persian is read from right to left). For example:
Both two-digit and four-digit years are valid but months and days are not usually padded with leading zeros.
References
Date and time notation in Iran Wikipedia(Text) CC BY-SA