What is 30 days from today?

Where do 30-day deadlines show up?

The most common place is a rental notice. Three large states write the rule in different ways, and the difference changes the date you count to.

California. Civil Code 1946.1 sets the notice an owner gives to end a periodic residential tenancy. It is 30 days when the tenant has lived in the home for less than one year. After a year, the owner's notice becomes 60 days. The 30-day figure is a count of days, so the calculator above gives the end date directly.

New York. Real Property Law 226-c ties notice to how long the tenant has been there. Under one year, a landlord gives at least 30 days' notice before a rent increase of 5% or more, or before deciding not to renew. Longer tenancies get 60 or 90 days, which have their own pages.

Texas. Property Code 91.001 is written in months, not days. A month-to-month tenancy ends on the later of the date in the notice or one month after the notice is given. One month and 30 days are not the same length, which is what the table below shows.

30 days vs one calendar month, from the 1st of each month in 2027

Start	30 days later	1 month later	Difference
Fri, Jan 1, 2027	Sun, Jan 31, 2027	Mon, Feb 1, 2027	+1 day
Mon, Feb 1, 2027	Wed, Mar 3, 2027	Mon, Mar 1, 2027	-2 days
Mon, Mar 1, 2027	Wed, Mar 31, 2027	Thu, Apr 1, 2027	+1 day
Thu, Apr 1, 2027	Sat, May 1, 2027	Sat, May 1, 2027	Same day
Sat, May 1, 2027	Mon, May 31, 2027	Tue, Jun 1, 2027	+1 day
Tue, Jun 1, 2027	Thu, Jul 1, 2027	Thu, Jul 1, 2027	Same day
Thu, Jul 1, 2027	Sat, Jul 31, 2027	Sun, Aug 1, 2027	+1 day
Sun, Aug 1, 2027	Tue, Aug 31, 2027	Wed, Sep 1, 2027	+1 day
Wed, Sep 1, 2027	Fri, Oct 1, 2027	Fri, Oct 1, 2027	Same day
Fri, Oct 1, 2027	Sun, Oct 31, 2027	Mon, Nov 1, 2027	+1 day
Mon, Nov 1, 2027	Wed, Dec 1, 2027	Wed, Dec 1, 2027	Same day
Wed, Dec 1, 2027	Fri, Dec 31, 2027	Sat, Jan 1, 2028	+1 day

Calculated by DayReckon. 30 days and one month match only when the starting month has 30 days. From Feb 1, 2027, 30 days lands on Wed, Mar 3, but one month later is Mon, Mar 1.

Why does "one month" not equal 30 days?

Months have 28 to 31 days. Start on Jan 1, 2027 and 30 days ends on Sun, Jan 31, while one month ends on Mon, Feb 1. Start on Feb 1 and the order reverses: 30 days reaches Wed, Mar 3, but one month is Mon, Mar 1. Only a start in a 30-day month lines the two up. When a document says "30 days," count days. When it says "one month," count to the same date next month.

What if the 30th day is a weekend?

The calendar count does not care. Day 30 is day 30, even on a Sunday. Some rules move a deadline to the next business day, and some do not, so read the rule that applies to you. The business-day figure in the answer box shows the other way of counting.