Calendars
Calendar Data, Excel & Calculations
Reliable pages begin with organised data.
One Agreed Source
A structured spreadsheet can hold dates, labels, events and location-specific information consistently. Keep source values separate from display formatting and retain a version that shows what was approved for the edition.
Checks at the Boundaries
Check year transitions, month lengths, leap-year behaviour, time zones and daylight-saving changes where relevant. A spreadsheet formula should be reviewed against the chosen authoritative source; successful calculation alone does not establish correctness.
From Table to Layout
Agree field names, text conventions and the treatment of missing values before bringing data into the page. After layout, check a representative selection and every exceptional date, then complete the edition’s agreed review.