Financial reports are distributed once a month and are available for download through Payments and Financial Reports on iTunes Connect. Financial reports for the previous month’s earnings are available in iTunes Connect by the end of the current fiscal month.
To see the days included in a monthly financial report, access Apple's fiscal calendar from Payments and Financial Reports.
To view the countries or regions covered by each report, hover over the respective country or region.
Payments and Financial Reports uses the Apple Fiscal Calendar, which can be found here.