Today’s the day Firefox is hoping to set a world download record.

The new Firefox 3 will be released for download at 1 p.m. Eastern in what Mozilla has dubbed “Download Day.” Engineers are now busy taking care of all the last minute details — everything from prepping the updated company site to checking the file status on all the mirror servers.

Mozilla is hoping to see the most times a single program has been downloaded in any single day, which would secure its place in the Guinness Book of World Records.