The meaning of "until" very confusing Hi, My Longman Dictionary defines "until" as "if something happens until a particular time, it continues and then stops at that time" followed by examples such as : [The ticket is valid until March.] (My question 1) So, when exactly is the ticket valid? Is it valid on March 1st? What about the following sentence? [You should turn in your homework until tomorrow.] (My question 2) When is the exact deadline? Is it midnight tonight or midnight tomorrow? What about the following sentence? [You should turn it in until 3 o'clock. (My question 3) You should turn it in before the clock hits 3, right? Thank you anyone who answers this. :) Have a great day all.I'm sorry for my mistakes. Let me simplify and rewrite my second and third questions. (Peachey's great answer helped a lot. Let me ask these just for confirmation) The ticket is valid until tomorrow. (My Question 2) Does the ticket become invalid after midnight tonight? The ticket is valid until 3 o'clock. (My Qeustion 3) Does the ticket become invalid one the clock hits 3?(My Qeustion 3) Does the ticket become invalid once* the clock hits 3?