Problems, Crashes and Errors of Hijri Calendar And Hijri Birthday + Age Calculator TODAY

Calculate the number of years: Start by calculating the number of years between the date of birth and the current date using the Hijri calendar.
Consider the Hijri months and days: After calculating the years, take into account the Hijri months and days to obtain an accurate Hijri age.

Tabular Islamic calendar It has a 30-year cycle with 11 leap years of 355 days and 19 years of 354 days.
In the long term, it is accurate to one day in about 2,500 solar years or 2,570 lunar years.
It also deviates up to about one or two days in the short term.

A Hijri month alternates between 29 and 30 days.
This makes a Hijri year about 11 days shorter than the Gregorian, with one year coming to 354-355 days.
So your Hijri age may be different from your Gregorian age.

The Islamic calendar has 12 months with 29 or 30 days.
If the Crescent Moon is visible shortly after sunset on the evening of day 29, the following day is the first day of the new month.
If no sighting is made, a 30th day is added to the current month, which is then followed by the first day of the subsequent month.