When calculating deadlines for my buyer in the One to Four Family Residential Contract (Resale), should I include weekend days or federal holidays? 1 minuteread Home / Knowledgebase / Contracts and Forms / When calculating deadlines for my buyer in the One to Four Family Residential Contract (Resale), should I include weekend days or federal holidays? Yes. TREC and TAR contracts use calendar days, not business days. This includes weekends and holidays. Source: TAR Contracts and Forms One to Four Family Residential Contract TAR TREC 00246Print Share FacebookTwitterLinkedin1 minuteread