Part 2: How to Stream Roku Supported Videos and Audio. If you have the video formats that Roku supports, congrats. But wait a minute, you can only cast them from phones to your TV via Roku, as long as you have an Apple device with iOS 4.3 or later, or one of the following Android phones or tablets: Samsung Galaxy S III.
A day, symbol d, is defined as 86 400 seconds. The Second is the base unit of time in SI units. A day according to Coordinated Universal Time (UCT) can include a negative or positive leap second, and can therefore have a length of either 86 399 or 86 401 seconds.
One second is equal to 1/86,400 of a mean solar day. This is easy to derive from the fact that there are 60 seconds in a minute, 60 minutes in an hour, and 24 hours in a mean solar day. This definition is, however, subject to limited accuracy because of irregularities in the earth's orbit around the sun.