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GPL-distributed Python software that draws sunrise, sunset and daylight graphs.

Sunrise/sunset hours, all year long

GPL-distributed Python software that draws sunrise, sunset and daylight graphs.

 
Shortcuts for internet web searches.

Give your browser extra power

Shortcuts for internet web searches.

 
History, advantages and usage contexts of the PNG image format.

A flexible, optimized and free image format

History, advantages and usage contexts of the PNG image format.