TIL that `defvar` in -lisp won't update a variable's value if it's already been set. No wonder I've been getting dates from last week, when I've been trying to get today's.

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"The defvar special form is similar to setq in that it sets the value of a variable. It is unlike setq in two ways: first, it only sets the value of the variable if the variable does not already have a value. If the variable already has a value, defvar does not override the existing value. Second, defvar has a documentation string."

Documentation string on a variable is pretty rad, though.

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