Which of these three phrases is better/correct?

  • Date at which it will be enabled
  • Date for when it will be enabled
  • Date on which it will be enabled

This is for instructions to a user to enter a date.

closed as off-topic by AmE speaker, Edwin Ashworth, Nigel J, Xanne, jimm101 Nov 22 '17 at 11:40

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"Date on which it will be enabled" is best.

You can see why in the following dialogue. Try changing "on" to different prepositions in your head - you will see that they won't work.

"On which date will it be enabled?"

"On Monday."

"Will I be able to view it on that date?"

"The date on which you can view it is the same date on which it will be enabled."

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