Ethiopia is on East Africa Time (EAT) which is UTC+03. It is common to use the 12-hour clock as the start of the day is dawn not midnight like most countries.
The Geez Calendar, usually known as the Ethiopian Calendar is seven or eight years behind the Gregorian calendar and the year starts on September 11 of the Gregorian calendar year.
Insert the following code on your site. <a href="http://www.ethiopiancalendar.net/">Ethiopian Calendar</a>