This is the 10313th most frequent Swedish word.
julas
"Julas" is a reflexive verb meaning "to celebrate Christmas."
In this sentence, 'julas' refers to the previous Christmas, serving as a temporal marker indicating when the celebration took place.
Vi firade hos farmor julas.
We celebrated at grandmother's last Christmas.
Here, 'julas' acts as an adverb specifying the time of the snow occurrence to the previous Christmas.
Julas var det mycket snö i Sverige.
Last Christmas, there was a lot of snow in Sweden.
In this context, 'julas' again provides a timeframe, specifying when the action of buying occurred relative to Christmas.