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- Week number and day of a date
This online tool enables users to calculate the week number and day of a particular week based on a single date.
Week Number Calculator
Please select a date to ascertain the week number and the corresponding day of the week. The day’s information can be displayed directly by clicking here.
Result
Friday, 26th December 2025 is part of week 52, which runs from Monday, 22nd December 2025 to Sunday, 28th December 2025.