Names of the days of the week is followed by a number indicating the day: "Monday" is literally "star day one", "Tuesday" is "star day two", etc. The exception is Sunday, where rì (日), meaning "sun" or "day", is used instead of a number. In Swahili, the day begins at sunrise, unlike in the Arabic and Hebrew calendars where the day starts at sunset (therefore an offset of twelve hours), and unlike in the Western world where the day starts at midnight (therefore an offset of six hours). Saturday is therefore the first day of the week, as it is the day that includes the first night
World Day for Laboratory Animals and other groups opposed to animal research have claimed that World Day For Animals In Laboratories is recognised by the United Nations. However, the day is not included on the official list of United Nations observances. World Day for Laboratory Animals World Day For Animals In Laboratories (WDAIL) (also known as World Lab Animal Day) is observed every year on 24 April. The surrounding week has come to be known as "World Week for Animals In Laboratories". The National Anti-Vivisection Society (NAVS) describe the day as an "international day of commemoration" for animals in laboratories. World Day For Animals In