How notice days are counted: calendar, business, and court days

“Three days” is not one rule. The same three words run on three different clocks depending on the state and the notice, and a notice served on the wrong clock is short even when the landlord counted carefully.

The three clocks

• Calendar days (Texas pay-or-quit, 3 days under Prop. Code § 24.005; New York’s 14-day rent demand): every day counts, weekends included. The day of service is not counted; counting starts the next day.
• Business days (Florida pay-or-quit, 3 days under § 83.56): Saturdays, Sundays and legal holidays do not count. A notice served on a Friday has burned one calendar day before the first countable day arrives.
• Court days (California pay-or-quit, 3 days under Code Civ. Proc. § 1161): Saturdays, Sundays and court holidays do not count — the court’s holiday calendar, not the landlord’s.

The rules that ride along

• The day of service never counts. Service today starts the clock tomorrow, on every clock.
• Mail can add days. Where a statute allows service by mail, it commonly adds days to the period (California adds five for a notice mailed inside the state). The printed serve date assumes service completed that day; a mailed notice must go earlier.
• A deadline on a non-countable day moves the serve date, not the period. Counting backward — the way the checker counts — absorbs this automatically; counting forward by hand is where it is lost.

The free checker counts backward from your target effective date on your state’s own clock, and prints the counting rule beside the date so you can check the math.

Run the free deadline checker