# Calendar in Gantt display messed up

**URL:** <https://help.ganttproject.biz/t/calendar-in-gantt-display-messed-up/1745>\
**Category:** GanttProject Desktop Support\
**Created:** [January 27, 2020, 5:46pm UTC](https://help.ganttproject.biz/t/calendar-in-gantt-display-messed-up/1745 "2020-01-27T17:46:35Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Ewald\_Fernbach](https://help.ganttproject.biz/user_avatar/help.ganttproject.biz/ewald_fernbach/32/477_2.png) [@Ewald\_Fernbach](https://help.ganttproject.biz/u/Ewald_Fernbach)\
**Post date:** [January 27, 2020, 5:46pm UTC](https://help.ganttproject.biz/t/calendar-in-gantt-display-messed-up/1745/1 "2020-01-27T17:46:35Z")

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the date display in my project is all messed up (see screenshot). How do I fix this?  
 ![image](https://help.ganttproject.biz/uploads/default/original/1X/16d61b8f426eea31d23a6c8bab064dada6137829.png)

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**Author:** ![DmitryBarashev](https://help.ganttproject.biz/user_avatar/help.ganttproject.biz/dmitrybarashev/32/406_2.png) [@DmitryBarashev](https://help.ganttproject.biz/u/DmitryBarashev)\
**Post date:** [January 27, 2020, 10:35pm UTC](https://help.ganttproject.biz/t/calendar-in-gantt-display-messed-up/1745/2 "2020-01-27T22:35:23Z")

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You need to replace `DD` (uppercased) in your custom date format with `dd` (lowercased). `DD` stands for “day of year”. `dd` stands for “day of month”.

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**Author:** ![Ewald\_Fernbach](https://help.ganttproject.biz/user_avatar/help.ganttproject.biz/ewald_fernbach/32/477_2.png) [@Ewald\_Fernbach](https://help.ganttproject.biz/u/Ewald_Fernbach)\
**Post date:** [January 29, 2020, 7:20am UTC](https://help.ganttproject.biz/t/calendar-in-gantt-display-messed-up/1745/3 "2020-01-29T07:20:06Z")

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Thx Dmtry it works now.