Desktop Calendar Software

How to create a holiday in Islamic hijri calendar (any software) to make sure it is repeated every year?

Hijri calendar being lunar, the preferred date will fall on another gregorian date next year. How to make the new appointment to follow Hijri and not Gregorian calendar for its repeats?

Public Comments

1. It's best to get a lunar calendar or a list of the lunar dates every year. .
2. You can find the whole format here http://freewarethings.blogspot.com/ (select english as a languge)