With Minter.io you can easily access any data and time range for detailed information.
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Use the time range picker to view data on specific periods. You can select from a list of preset date ranges or create custom time ranges.

When choosing to group your data by week it will include only weeks with Mondays. Grouping your data by 'Month' will show it starting from the 1st. 

Grouping your data by day will show the totals data for the selected time range, for example, the total amount of posts you made during the selected time range.