Binary time is just like telling the regular time, but instead of using numbers 0-9, we only use 0 and 1, which are the only numbers you can put into a computer.
We measure time by counting how many hours, minutes, and seconds have passed in a day. In binary time, instead of counting from 1 to 12 for the hours and 0 to 59 for the minutes and seconds, we use numbers that are only made up of 0's and 1's.
For example, if we're in regular time and it's 2:00 PM, in binary time we would say it's 10:00 in binary time, because 2 in binary is 10. And if it's 5:30 PM in regular time, in binary time it would be 101:0110 because 5 in binary is 101 and 30 in binary is 0110.
Binary time makes it easier for computers to understand time because it only uses two digits, 0 and 1, and this is very important because a computer only understands these two digits. Also, it makes telling time interesting and fun for people.