• Hanukkah : 1,490,000 hits.
• Chanukkah : 397,000 hits.
• Hanuka : 388,000 hits.
• Chanuka : 339,000 hits.
• Chanukah : 311,000 hits.
• Channukah : 143,000 hits.
• Hanukka : 143,000 hits.
• Chanukka : 121,000 hits.
• Hanukah : 95,200 hits.
• Hannukah : 86,700 hits.
• Hannukkah : 50,300 hits.
• Hannuka : 42,500 hits.
• Channuka : 12,500 hits.
• Xanuka : 10,200 hits.
• Hannukka : 5,940 hits.
• Channukkah : 4,250 hits.
• Channukka : 1,810 hits.
• Chanuqa : 31 hits.

Hanukkah fell very early this year, the first night was December 4th, so there wasn’t a lot of time to build up queries before the holiday started. I think that’s reflected in the lowered counts across the top of the field. While it would be nice to think there was starting to be some consensus about how to render the word in English, the dramatic falloff of the secondary Ch-spellings is most likely time-related. I’m going to keep an eye on the numbers over the next eight nights, if results increase significantly I’ll update the graph.

Here’s Google Trends graph showing results over time. Click the graph for more viewing options.

Previous years: 2004, 2005, 2006 (my CSV data file). 2004 numbers thanks to Jeremy Blachman