Why is February shorter than other months?
Why is the number of days in February smaller than that in other months? How were the rules for leap year established? Do you know that leap years do not always occur every 4 years?
These will be explained in the episode of "Cool Met Stuff".
(The video is broadcasted in Cantonese)
(For more details, please click here to read the article written by Hong Kong Observatory)
(Information provided by Hong Kong Observatory)