born in 1954 in Arak, Iran. According to the Farsi Wikipedia he was born 2 Mordad 1333 in Arak, Iran. The Esperanto Wikipedia has it that he was born in 1953.
Dates of birth of people from Iran are often incorrectly stated. Typically the exact date is known, it is just that it is in a format we are not comfortable with. It would be good when the software used by Wikidata enables the use of Persian dates.
There are two parts to this; dates are used in the Persian date format on the fa.wikipedia.org. Other Wikipedias use different date formats as well. When Wikidata information is to be used in these languages, it has to be able to show dates according to these different calendars. The information made available in these date formats is important in every project and therefore it should be possible to enter dates in the different calendar systems.