"We have class now."

Translation: Vi har time nu.

[dnshope]

Why not 'klasse'?

[Frederikbr]

klasse is used when referring to a group pupils (primary or secondary school) or to social classes.

Time (also means an hour) refers to the period where the group of pupils meet (like a lecture or a lesson)

[Mingan8]

Why not an article in either language?