Get Activity Logs List created date

[danielle98]

I'd like to know when an acitivity is created.  I don't want to poll on startTime.  Is there something analogous to createdDate.  All I see is lastModifiedDate.  Also, is there a way to search based on lastModifiedDate?  I don't see that in the API.  

Moderator edit: clarified topic subject.

[JeremiahFitbit]

In most scenarios, you should not poll for data. You should use the Subscriptions API.

There is not a created date. Sorting based on last modified date is not available.