Should I say:

I will update you by next Tuesday


I will update you on next Tuesday

It's a bit confusing.

  • What is wrong with what you have?
    – Matt Ellen
    Sep 6, 2013 at 9:05
  • 2
    "by next Tuesday" means you can provide the update anytime from now until tuesday. "I will update you next Tuesday" implies it's acutally happening on Tuesday.
    – TsSkTo
    Sep 6, 2013 at 9:30
  • 5
    We would never say "on next Tuesday" - it could be "next Tuesday" or "on Tuesday" - but not both together.
    – TrevorD
    Sep 6, 2013 at 11:25

1 Answer 1


I will update you by next Tuesday implies that it may happen before then

If you were to give an update on Tuesday you'd probably say:

"On Tuesday I will update you"

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