# Synchronizing Web application and server time zones

To make sure that the DST change and the time zones are correctly taken into account, check that your OS includes an environment variable set as follows:

```
On Windows: TZ=Europe/Paris

On Linux: Export TZ="Europe/Paris"
```

* Available in:
* Big Data
* Big Data Platform
* Data Fabric
* Data Management Platform
* Data Services Platform
* Qlik Cloud Enterprise Edition
* Qlik Talend Cloud Enterprise Edition
* Qlik Talend Cloud Premium Edition
* Real-Time Big Data Platform

If you want to implement high availability to the task execution scheduling using Talend clustering feature, see [Talend High Availability](https://help.qlik.com/talend/en-US/installation-guide-linux/8.0/talend-high-availability).