National Calendar Day August 18 2025

National Calendar Day August 18 2025. On this day, a french astronmer discovered helium, australia and new zealand withdrew their. General information for august 18th 2025;


National Calendar Day August 18 2025

On this day, a french astronmer discovered helium, australia and new zealand withdrew their. Chose a month to view an observance and holiday calendar for that month in 2025.

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