In GnuPG I can edit the expiry of my key like this:

$ gpg --edit-key 01234567

gpg> expire
Changing expiration time for the primary key.
Please specify how long the key should be valid.
         0 = key does not expire
      <n>  = key expires in n days
      <n>w = key expires in n weeks
      <n>m = key expires in n months
      <n>y = key expires in n years
Key is valid for? (0)

But what if I want to set the expiry to a specific (absolute) date/time, e.g. 01-01-2015, midnight? Do I really have to calculate the exact time from now, e.g. 9m+15d+...?

up vote 3 down vote accepted

The output of GnuPG on how to specify the expiry is missing the option to just enter an ISO date in the form of YYYY-MM-DD. Unlike the help text suggests it would not be valid, it will just work:

Key is valid for? (0) 2015-01-01
Key expires at Thu 01 Jan 2015 00:00:00 CET

Your Answer


By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Not the answer you're looking for? Browse other questions tagged or ask your own question.