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About ptaff.ca
Spheres

Our suggestions

Graphs of sunrise/sunset and time of light for any place in the world.

Sunrise and sunset, all year long, anywhere

Graphs of sunrise/sunset and time of light for any place in the world.

 
Perl software distributed under the GPL that does simple transformations on MIDI files.

Concatenate MIDI files

Perl software distributed under the GPL that does simple transformations on MIDI files.

 
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.