On In this page chapter all definitions for both Attributes and Metrics are presented. To keep things organized, we've created three separate pages, so you can find the definitions per dataset.
The following information is recurring in all underlying chapters: ISO week & ISO year
The ISO week and ISO year are issued by the International Organization for Standardization and are used to create a standard and a comparable week and year number. A week number in ISO will always start on a Monday, independent of the actual first date of the year (January first). The first week of the year always contains the 4th of January & the Thursday is always a January-day. So basically the first week can be as below, or anything in between:
Day of Week | Date |
---|---|
Monday | 4th of January |
Tuesday | 5th of January |
Wednesday | 6th of January |
Thursday | 7th of January |
Friday | 8th of January |
Saturday | 9th of January |
Sunday | 10th of January |
Day of Week | Date |
---|---|
Monday | 29th of December |
Tuesday | 30th of December |
Wednesday | 31st of December |
Thursday | 1st of January |
Friday | 2nd of January |
Saturday | 3rd of January |
Sunday | 4th of January |
Due to this mapping, the ISO year has 52 weeks (364 days) or 53 weeks (371 days). The week number also determines which ISO year a date has. E.g. December 31st 2019 belongs to ISO week 1 of the next year, so the ISO year of 31-12-2019 is 2020.