This Saturday, our engineers will be performing routine site maintenance from 10am to 2pm PST. You'll be unable to log in to your AdSense and Ad Manager accounts during this time, but we'll continue serving ads to your pages and tracking your clicks, impressions, and earnings as usual. In addition, your ad targeting won't be affected.

We've converted the maintenance start time for a few cities around the world:

Toronto - 1pm Saturday
Buenos Aires - 3pm Saturday
Cape Town - 8pm Saturday
Moscow - 9pm Saturday
New Delhi -11:30pm Saturday
Melbourne - 5am Sunday

If you'd like to learn more about what goes on during these maintenance periods, check out this Inside AdSense post.