Time zone problem of the time slicer

[Gawain]

When the date is July 30, select the past month, the filter shows July 1 to July 30, but the actual filter data contains June 30But when the time slicer was switched to a different format, it showed the correct data

[v-xiaoyan-msft]

Hi  @Gawain ,

Does the problem appear in both Power BI Desktop and Service? 

Can you provide detailed version information so we can reproduce the issue? We'll get back to the product team as soon as it's acknowledged as an issue!
Thanks in advance!

Best regards.
Community Support Team_Caitlyn

[Gawain]

Hi @v-xiaoyan-msft Is that enough information？

The data is like this, the dateonly field only contains the date but not the time, but when we use the time slicer for the past month, it contains the data of the last month, which may be the time zone problem, we need help to check