WhatWeek

Date to Week Number Converter

Convert a date to its week number, week-based year, weekday, week start and end dates, and planning metadata.

Week results use the time zone entered here. Type any IANA time zone, such as Europe/Paris or America/Los_Angeles.
Week system

2023-12-25 falls in ISO Week 52 of 2023 (2023-W52-1), from 2023-12-25 through 2023-12-31.

Date
2023-12-25
Week system
ISO
ISO week date
2023-W52-1
Week-based year
2023
Week number
52
Week starts
2023-12-25
Week ends
2023-12-31
Day of year
359
Quarter
Q4
Weeks remaining
0
Excel formula
=ISOWEEKNUM(DATE(2023,12,25))

Public holidays this week

Country: Holiday country unavailable

Data unavailable

Holiday country could not be inferred from this time zone yet.

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