Many parking spots in Seattle are time-limited, e.g. 2 hours:
How long must one wait before re-parking in the such time-limited parking spots in Seattle (Washington state, United States)?
According to 11.72.240 of the Seattle Municipal Code, entitled Moving vehicle to avoid time limit:
No person shall move and repark a vehicle on either side of a street within the same block in order to avoid a parking time limit regulation specified for either side of the street in that particular block.