“Split meeting” means a meeting having two periods of racing separated by at least 45 days, one period which is no more than 18 consecutive weeks in length and the other period which is no less than four consecutive weeks in length. The “short period” of a split meeting is the period of lesser duration.
Source:
Section 19415.5, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=BPC§ionNum=19415.5..