# Customize business calendar for holidays

**URL:** <https://forum.flowable.org/t/customize-business-calendar-for-holidays/7023>\
**Category:** Flowable Engine\
**Created:** [November 3, 2020, 8:31pm UTC](https://forum.flowable.org/t/customize-business-calendar-for-holidays/7023 "2020-11-03T20:31:31Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![dersteppenwolf](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/dersteppenwolf/32/1354_2.png) [@dersteppenwolf](https://forum.flowable.org/u/dersteppenwolf)\
**Post date:** [November 3, 2020, 8:31pm UTC](https://forum.flowable.org/t/customize-business-calendar-for-holidays/7023/1 "2020-11-03T20:31:31Z")

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Hi, I would like to know if is there some detailed example about the customization of the business calendar to include personalized holidays?

At this moment there is only one article in the forum [How to configure the business calendar](https://forum.flowable.org/t/how-to-configure-the-business-calendar/2986)  
but it isn’t clear enough.

Best

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**Author:** ![joram](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/joram/32/26_2.png) [@joram](https://forum.flowable.org/u/joram)\
**Post date:** [November 9, 2020, 8:57am UTC](https://forum.flowable.org/t/customize-business-calendar-for-holidays/7023/2 "2020-11-09T08:57:03Z")

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No, there isn’t much documentation available about that topic yet. The interface you need to implement is here: [https://github.com/flowable/flowable-engine/blob/master/modules/flowable-engine-common/src/main/java/org/flowable/common/engine/impl/calendar/BusinessCalendar.java](https://github.com/flowable/flowable-engine/blob/master/modules/flowable-engine-common/src/main/java/org/flowable/common/engine/impl/calendar/BusinessCalendar.java). The implementation then needs to be injected into the engine configuration. Also note that timer event definition in the BPMN needs to get a calendarName to resolve to it: [https://github.com/flowable/flowable-engine/blob/master/modules/flowable-engine/src/main/java/org/flowable/engine/impl/util/TimerUtil.java#L96](https://github.com/flowable/flowable-engine/blob/master/modules/flowable-engine/src/main/java/org/flowable/engine/impl/util/TimerUtil.java#L96)

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**Author:** ![KaylenPhelps](https://avatars.discourse-cdn.com/v4/letter/k/96bed5/32.png) [@KaylenPhelps](https://forum.flowable.org/u/KaylenPhelps)\
**Post date:** [March 1, 2024, 3:17am UTC](https://forum.flowable.org/t/customize-business-calendar-for-holidays/7023/3 "2024-03-01T03:17:09Z")

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I totally get where you’re coming from. Customizing your business calendar with personalized holidays is key to staying organized and ensuring everyone’s on the same page. It’s a bit frustrating when the available resources don’t provide the level of detail you need.  
While the forum article might be lacking, there are other avenues you can explore to get the clarity you’re looking for. Have you considered reaching out to the community directly? Sometimes fellow users can offer insights and tips that aren’t covered in official documentation.  
Also, have you checked out [https://planfix.com/nonprofit/](https://planfix.com/nonprofit/) for nonprofit organizations? It’s a powerful tool for managing various aspects of your operations, including calendar management. It might have features or integrations that could streamline the process for you.