The Cron runs every night at 11 pm. It usually takes a couple of hours. Any changes made to the site will update at that time.
When scheduling a page (or pages) to publish (such as to reflect changes to legislation on their effective date), be sure to schedule them to publish before 11 pm the day before the effective date, so they get captured by the Cron.
Check that scheduled updates have published correctly at the start of the next workday.