How many days since last Blue Moon

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Blue Moon May 2026 Countdown details

It's been 11 days since Blue Moon May 2026 on Sunday, 31 May 2026.

• 📅 11 days
• 📅 1 week and 4 days
• 🕐 264 hours
• 🛳️ 1 Atlantic crossing

About Blue Moon May 2026

A Blue Moon is the rare second full moon in a single calendar month (or the third of four in an astronomical season). Despite the name, the moon does not actually appear blue — the phrase gave rise to the expression once in a blue moon, meaning extremely infrequent.

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