# Happy Summer Solstice! Today marks the longest day of the year for the Northern Hemisphere

> The summer solstice has arrived, marking the start of astronomical summer and the longest day of 2026 in the northern hemisphere. The summer solstice occurred at 4:24 a. m.

- **Source:** [Space](https://www.space.com/stargazing/happy-summer-solstice-today-marks-the-longest-day-of-the-year-for-the-northern-hemisphere?utm_source=gearopen.com&utm_medium=referral&utm_campaign=feed&utm_content=6a385bc1e8976fcb37ce01e7)
- **Published:** 2026-06-21
- **Category:** Science
- **Tags:** #summer #solstice #hemisphere #longest #northern #happy #marks #arrived
- **Canonical:** http://localhost:4321/a/6a385bc1e8976fcb37ce01e7

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_GearOpen's distilled summary. The full original article is published at Space (source link above); GearOpen does not republish the source's full text._