The annual flag charts are an attempt to give an overview of the national and cultural flags flown during every year since 1848. The main chart gives a snapshot of the flags flown on December 31st of each year, and the notes section below shows any changes that happened in the preceding twelve months.
This site was first created in 2015. The annual charts from that time on represent a contemporary record of the flags of the world, while the charts from before are built from historical research and interpretation. Contemporary observers would not have categorized the world's flags in the same way that this site does, and even the modern pages are constantly being updated as times change and new information comes to light. In other words, these pages are perpetual works in progress.