Generally speaking, if your garbage pickup day falls on a holiday, your garbage will be collected on Wednesday that week.
For example, if your pickup is on Monday or Tuesday, and either is a holiday, then the City will collect your garbage on Wednesday. If your garbage is picked up on Thursday or Friday, and either of those days is a holiday, then the City will collect your garbage on Wednesday that week. See graphic below.
You can sign up to receive alerts about garbage collection changes on the Notify Me page. Click the following link, sign up, and select "Service Messages," Notify Me.