Quote Originally Posted by mehdi62b
we use persian calendar , (like Afganistan and Tajikistan).
from the site:
This calendar is almost unknown in the West, although it is one of the most accurate, if not the most accurate in the world. Compared with the Gregorian calendar, which errors by one day, every 3,226 years, the Iranian calendar needs a one-day correction every 141,000 years. There are two reasons for this accuracy. The Iranian calendar uses a sophisticated intercalation system for determining the leap years. And the beginning of the year, which is a natural phenomenon (arrival of the Sun at the Vernal Equinox), is precisely determined each year by astronomical observations
that was a huge gap....why we still using the unaccurate version?.......I vote for Persian Calendar:thumbs: