<p>This Week in History: the establishment of calendars and international timekeeping systems, the federation of Australia, the birthdays of several prominent authors, and the introduction of the euro as a currency. </p><p><br></p><hr><p style='color:grey; font-size:0.75em;'> Hosted on Acast. See <a style='color:grey;' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for more information.</p>