First Date 2025. 365 days a calendar at hand! The year which began at advent 2023 and ends at advent 2024 was year b.

Please note that there are multiple systems for week numbering, this is the iso week date. Summer 2025 starts on friday, june 20th in the northern hemisphere, with the first day of summer being the longest daylight day of the year with the earth’s axis having reached its furthest tilt and begins to change.