Two-and-a-Half Weeks
The Celestia GTK+ front-end was in need of rewrite. He is a completely true quote by Celestia developer Fridger Schrempp:

Comparing the GNOME and notably the KDE flavors to the GTK version for Linux, I think it is fair to insist that the difference is still /VERY/ large. It is simply much more "than just a little bit of work" to get the gtk version to the same standards.

So, I took the challenge that was laid before me.

Having started the re-write three Thursdays ago, and having spent on average five hours per day working on it, it is safe to say that I was happy to check it into CVS this evening.

Here is the basic ChangeLog:

Major Changes:

• Split source into multiple files
• Performance: removed repeated calls to resync preferences
• Redesigned the interface to use GtkActions and GtkUIManager
• Added preference saving to file
• Commented heavily

Minor Changes:

• New about dialog
• Made non-modal: GoTo, View Options, Tour Guide, Browsers, EclipseFinder
• Changed a few calls to standard C to allow for Windows building
• Star Browser now uses greek letters in names
• Added tab-completion support on overlay entry
• Replaced deprecated GtkOptionMenu with GtkComboBox in Set Time window
• New GTK save/open dialog
• Moved the License dialog from Help menu to new About box
• Added "Copy" and "Open" URL functions
• Galaxy Brightness preferences saved
• Updated GConf schema/settings
• Added command line options
• Fixed automake bug where GConf schema would always install

Essentially a complete re-write. Now, on to other projects?