🕐Announcement: ReplacementClock.org is now live! A year ago, I went looking for something like a Great Replacement Tracker — a site that aggregated all the demographic data for the West and could tell me how bad things really were. To my surprise, I couldn't find one. So six months ago, I started building it myself. Today, I'm announcing the first live version of the Great Replacement Clock. It tracks the European-descended share of the world's population and of 45 historically White countries. It consolidates historical figures and modeled projections into a single interactive timeline — sourced, auditable, and methodologically transparent. Accurate ethnic demographic data for Western countries is uniquely difficult to access. No country directly tracks the share of its population that is of European descent. Several nations prohibit or restrict its collection outright; France's ban on ethnic statistics is the most prominent but not the only case. In other countries, official statistics obscure long-term trends through inconsistent census categories and aggregation methods that flatten meaningful distinctions. They miss and misclassify people in predictable ways: bundling Middle Eastern and North African populations into "White," absorbing later-generation immigrants into "native," or recording European immigrants to other European countries as merely "foreign." The US illustrates this: up through 2020, federal standards classified Middle Eastern and North African populations as White. The result is a landscape in which some of the most consequential facts about the trajectory of Western societies are among the hardest to establish with precision. This project exists to close that gap. It draws on the best available demographic evidence to reconstruct the European-descended share of each population across time, using a consistent definition across countries and eras. The sources, assumptions, and adjustments behind every figure are open to inspection. This is a v1. If you spot a questionable figure, please flag it for review. I welcome feedback and contributions. This tool will only get better with time. Demographic composition is a matter of public interest, not a protected secret. We deserve to know what time it is.