Hi,
It would be nice if the day column headers also showed the dates.
Also the week selector could also show the date range for ‘This week’ and ‘Last week’.
Hey there 
Thank you so much for your feedback!
As a quick solution, you can click on the “Last week” as circled in your screenshot and it will highlight the dates for the week that’s currently selected and show the rest of the month 
FYI: It’s a duplicate of Feature request: show dates in timesheet view - Product Feedback - Toggl Community
Nevertheless +1 for this.