Do you plan to register in the Arch Linux forums, but the registration question - something about date and sed - is not easily solvable for you because you don't have a GNU/Linux machine at hand?
Fear not, I'll help you. Just select the currently asked question from the combobox below and I'll do the rest!
What is the output of "date -u +%V$(uname)|shasum|sed 's/\W//g'"?