Better Menu Bar Clock for OS X

OS X doesn't offer a very good menu bar clock by default. Day-O is better.

By Matthew Malinowski, 2013-10-24


First of several "new Mac OS X install" posts to remind me of my settings the next time I do this.

OS X's default menu bar clock is not very flexible or useful. Shaun Inman created a simple, much better alternative called Day-O. It works perfectly with Mavericks.

Option-drag the system clock out of the menu bar to remove it. Download Day-O, copy it to Applications, open it up. Click on the new clock in the menu bar and go to Preferences, and configure away.

I hide the calendar icon and set Day-O to open at login. Next, I format my clock using Unicode date format patterns to something that looks a lot like ISO 8601.

The first half of my clock is an ISO week date, which looks like this (as of today): 2013-W43-5. In other words, it's Thursday of week 43 of year 2013. The string for this is yyyy-'W'ww-c.

The second half of my clock is the date and time, which looks like this (as of right now): 2013-10-24T11:42:17-0400. Clear enough what that is. The string for this is yyyy-MM-dd'T'HH:mm:ssZ.

So, the whole string together is yyyy-'W'ww-c yyyy-MM-dd'T'HH:mm:ssZ, which displays 2013-W43-5 2013-10-24T11:42:17-0400.


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