Islamic Calendar depends on the movement of the moon. The beginning of each month is marked by the observance of a new moon seen for the first time. Visibility of the new moon depends on various factors such as weather hence; Islamic Calendar is only an estimate of the future Islamic events. We provides the most accurate Islamic calendar with special Islamic days and events tracking. You can convert Hijri dates to Gregorian and vice versa and change Hijri date settings to adjust and customize your calendar within a few clicks.