I'm continually amazed at how useful Siri is to control the various functions of my iPad. I often use it to set an alarm or a timer. Doing so is so much faster than interacting with the Clock app itself. You can also use Siri to tell you the time and date, as well as the time at a specific location around the world. And you can ask Siri to tell you the date for a particular day of the week.
Siri
Tip of the Day: Use Siri to Check Stock Prices
By Jim Karpen
If you own stocks or have an interest in how the market is doing, you can use Siri to check current stock prices. In addition, you can compare performance, ask more general questions about how the market is doing, ask about the performance of specific indices such as the Nikkei, and more. Note that this functionality is available on the iPad as well, even though iOS on the iPad doesn't include Apple's Stocks app.
How to Get Directions from Siri Without Using iOS Maps
By Steve Overton
There is a commonly held belief that men don't like to ask for directions. As a guy, I am here to say it's true. At least for me. With Siri, I can ask for directions without anyone knowing.