I have some questions about time in the Azure deata center and what assumptions we can make.<br> <br>1. What time zone does do data center machines run in?<br><br>2. Can we make any assumptions about machines in Azure having the correct time? How is time kept up to date and corrected?<br><br>3. What degree of agreement between clocks can we expect across machines in the data center? Will they be within a few seconds of each other? Within a minute of each other?<br><br>5. Is there a master time service, or some means to query the data center for its official time?<br><br>6. When we put a blob into cloud storage, is the LastModified time set by the machine doing the storing (which might be local to my enterprise) or is it set by the data center?<br><br><hr class="sig">David Pallmann, Director, .NET Application Development, Neudesic© 2009 Microsoft Corporation. All rights reserved.Thu, 21 May 2009 13:22:04 Z6a5eec6f-11c2-493c-a779-dcc43e6296edhttp://social.msdn.microsoft.com/Forums/en-US/windowsazure/thread/6a5eec6f-11c2-493c-a779-dcc43e6296ed#6a5eec6f-11c2-493c-a779-dcc43e6296edhttp://social.msdn.microsoft.com/Forums/en-US/windowsazure/thread/6a5eec6f-11c2-493c-a779-dcc43e6296ed#6a5eec6f-11c2-493c-a779-dcc43e6296edDavid Pallmannhttp://social.msdn.microsoft.com/Profile/en-US/?user=David%20PallmannI have some questions about time in the Azure deata center and what assumptions we can make.<br> <br>1. What time zone does do data center machines run in?<br><br>2. Can we make any assumptions about machines in Azure having the correct time? How is time kept up to date and corrected?<br><br>3. What degree of agreement between clocks can we expect across machines in the data center? Will they be within a few seconds of each other? Within a minute of each other?<br><br>5. Is there a master time service, or some means to query the data center for its official time?<br><br>6. When we put a blob into cloud storage, is the LastModified time set by the machine doing the storing (which might be local to my enterprise) or is it set by the data center?<br><br><hr class="sig">David Pallmann, Director, .NET Application Development, NeudesicWed, 07 Jan 2009 20:35:13 Z2009-01-07T20:35:13Zhttp://social.msdn.microsoft.com/Forums/en-US/windowsazure/thread/6a5eec6f-11c2-493c-a779-dcc43e6296ed#64d92788-6ec1-443b-b150-028196695ec0http://social.msdn.microsoft.com/Forums/en-US/windowsazure/thread/6a5eec6f-11c2-493c-a779-dcc43e6296ed#64d92788-6ec1-443b-b150-028196695ec0Aleks Gershafthttp://social.msdn.microsoft.com/Profile/en-US/?user=Aleks%20Gershaft David, <br> We are currently investigating all of the details about your question to make sure our answer is correct to the current behavior and our policy. I can give some answers at this time.<br><br>1) Current timezone is PST, but we may change it in future to UTC. (There was a preivous thread discussing the timezone)<br><br>5) No, the time is maintained by the fabric without exposing any master time server. Any type of queries wouldn't be very exact due to the potential roundtrip times. <br>6) The LastModified time is set based on the server that does the final commit of the blob. It uses the UTC rather than any local time.Thu, 08 Jan 2009 17:02:31 Z2009-01-08T17:02:31Z