every year, may both starts and finishes on the same day of the week as january of the following year, as each other's first and last days are exactly 35 weeks (245 days) apart. in years immediately before common years, may starts on the same day of the week as october of the following year, and in years immediately before leap years, april and july of the following year. in years immediately before common years, may finishes on the same day of the week as february and october of the following year, and in years immediately before leap years, july of the following year.