<Table> <Tr> <Th> Occasion or date </Th> <Th> Protocol or significance </Th> </Tr> <Tr> <Td> The death of the sovereign </Td> <Td> From the time of notification of death until sunset on the day of the funeral or memorial service, but the flag is flown at full - mast on the day on which the accession of the new monarch is proclaimed </Td> </Tr> <Tr> <Td> The death of a Governor General or Prime Minister who dies while in office </Td> <Td> From the time of notification of death until sunset on the day of the funeral or memorial service </Td> </Tr> <Tr> <Td> The death of any member of the Royal Family, a former Governor General, the sitting Chief Justice of the Supreme Court, sitting Ministers of the Crown, or a former Prime Minister </Td> <Td> From the time of notification of death until sunset on the day of the funeral or, if there is to be a memorial service, from the time of notification of death until sunset the following day and from sunrise to sunset on the day of the service </Td> </Tr> <Tr> <Td> The death of a police officer in the line of duty . </Td> <Td> The flag could be flown at half - mast from a couple of days to weeks, depending on the ranking of the officer . </Td> </Tr> <Tr> <Td> 28 April of each year </Td> <Td> Marking the Day of Mourning for People Killed or Injured in the Workplace (coinciding with World Day for Safety and Health at Work) </Td> </Tr> <Tr> <Td> 23 June of each year </Td> <Td> Marking the National Day of Remembrance for Victims of Terrorism </Td> </Tr> <Tr> <Td> Last Sunday in September of each year </Td> <Td> Marking Police Officer's National Memorial Day </Td> </Tr> <Tr> <Td> 11 November of each year </Td> <Td> Marking Remembrance Day </Td> </Tr> <Tr> <Td> 6 December of each year </Td> <Td> Marking the National Day of Remembrance and Action on Violence Against Women </Td> </Tr> </Table> <Tr> <Th> Occasion or date </Th> <Th> Protocol or significance </Th> </Tr> <Tr> <Td> The death of the sovereign </Td> <Td> From the time of notification of death until sunset on the day of the funeral or memorial service, but the flag is flown at full - mast on the day on which the accession of the new monarch is proclaimed </Td> </Tr> <Tr> <Td> The death of a Governor General or Prime Minister who dies while in office </Td> <Td> From the time of notification of death until sunset on the day of the funeral or memorial service </Td> </Tr>

When is the flag flown at half staff