punctual

adjective7

1. •
   Prompt; on time.
2. •
   Of an event, happening at the appointed time.
3. •
   Of a person, acting at the appointed time.

   • Luis is never late; he's the most punctual person I know.
4. •
   (nonstandard) Periodic; occasional.

   • The management of the above mentioned feed sectors is subject to close co-operation with the Member States through […] punctual expert groups meetings where appropriate.
5. •
   Existing as a point or series of points.
6. •
   Expressing a momentary action that has no duration.
7. •
   (old-fashioned) Observing trivial points; punctilious.