Calgary Lilac Festival is a popular annual event

The Calgary Lilac Festival is a popular annual event that celebrates the beauty of lilac blossoms and the arrival of spring in Calgary, Alberta, Canada.

As of my knowledge cutoff in 2021, the exact dates for the 2025 festival have not been confirmed yet. Typically, the festival is held in late May or early June, when the lilac trees are in full bloom. For the most accurate and up-to-date information on the 2025 Calgary Lilac Festival, including the event dates, activities, and any potential changes or cancellations due to unforeseen circumstances, it's best to check the official festival website closer to the event or follow their social media channels.