How is International Day of Clean Air for Blue Skies calculated?

This event is observed every year on 7 September.

When is International Day of Clean Air for Blue Skies 2549?

Name: International Day of Clean Air for Blue Skies
Start: 2549-09-07
End: 2549-09-07
Location: Worldwide

Promotes action to improve air quality and protect human health and the environment.

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When is International Day of Clean Air for Blue Skies 2549?: International Day of Clean Air for Blue Skies 2549 is on Sunday, 7 September 2549.
What day of the week is International Day of Clean Air for Blue Skies 2549?: It falls on Sunday.
How is International Day of Clean Air for Blue Skies calculated?: This event is observed every year on 7 September.