99% Invisible

159- The Calendar

<p>A month is hardly a unit of measurement. It can start on any day of the week and last anywhere from 28 to 31 days. Sometimes a month is four weeks long, sometimes five, sometimes six. You have to buy … <a href="http://99percentinvisible.prx.org/2015/04/08/159-the-calendar/" target="_blank">Continue reading →</a></p>

Design is everywhere in our lives, perhaps most importantly in the places where we've just stopped noticing. 99% Invisible is a weekly exploration of the process and power of design and architecture. From award winning producer Roman Mars. Learn more at 99percentinvisible.org.