What is the meaning of timely?

adjective

• Before a time limit expires.
  • usage: "the timely filing of his income tax return"
• Done or happening at the appropriate or proper time.
  • usage: "a timely warning"; "with timely treatment the patient has a good chance of recovery"; "a seasonable time for discussion"; "the book's publication was well timed"
  • synonyms: seasonable, well-timed, well timed

adverb

• At an opportune time.
  • usage: "your letter arrived apropos"
  • synonyms: seasonably, well-timed, apropos