Demetra Twin Days Past Days That Began Alike

Finds the past days whose first hours moved like today, draws what followed them as a fan, and checks that reading against a simple later-week test. Counts and ranges, not odds. It never trades on live charts.

Main features

• Twins: once enough hours of today are complete, Twin Days searches the past days of your symbol for the ones whose hourly path so far is closest to today, and keeps the closest ones. How far back it looks, how many twins it keeps, and how many completed hours of today it waits for are your inputs.
• What followed, as counts and ranges: how many twins closed higher by the end of their day, the typical rest-of-day move, and the middle of the range of those moves. Example: "5 of 8 closed higher".
• A fan on the chart: the typical and middle-range rest-of-day moves of the twins, drawn from the current hour to the end of the server day.
• A later-week check: the same search is repeated on past days, using only the data that existed on each of those days, and compared with a 50/50 split. The panel says plainly when the twins did not beat that, which on most symbols they do not, and stays quiet until there are enough test days.
• The closest twins listed with their date, how near they were, and how their day went on.
• Server-time days. A broker's short Sunday open and very short holiday days are not used as days.
• Optional alert once a day when today's twins are ready (popup, sound, push, e-mail; off by default). Sent only while connected with the history in sync, and remembered across restarts, so a restart never repeats it. Never in the Strategy Tester.
• Panel with an explanation on every row. Minimize hides the panel and the fan. On a chart too small for the full panel, it folds itself to a title bar. No account data on screen.
• Out-of-range inputs are refused with one clear message. No DLL, no web requests. English UI. (The Strategy Tester demo presses the panel buttons and opens one validator trade.)

Trading involves risk of loss. Twin Days shows what followed similar days on past prices; it gives no trading signals, no odds and no guarantee of results. Past counts do not predict future ones.