How are milestones ordered in GitHub

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How are GitHub milestones ordered? Is it possible to order them somehow?

They're not ordered alphabetically (I tried adding 0, 1, 2, etc., didn't work).

They're not ordered by last update.

UPDATE: I usually create several milestones without due date. How are those ordered?

Best Answer

They are ordered by due date. Items with no due date are put at the top of the list.