KEY POINTS
- For daily recurring buys, the best and worst hour of the day differed by only 0.08%.
- For weekly buys, the gap between the best hour (Friday around 3 AM EST) and the worst (Wednesday around 9 PM EST) was 0.77%.
- On $100 a week from January 2023 to October 2025, the best slot would have bought about $253 more bitcoin than the worst.
- The article concludes that timing is too small to matter much for passive buyers.
River tested 24 daily and 168 weekly schedules for recurring buys, starting in January 2023, after adjusting for bitcoin's steady upward drift so the hours could be compared fairly.
It found almost no difference between hours of the day, and a small difference between hours of the week, with early Friday mornings slightly cheaper and Wednesdays slightly more expensive. Its conclusion is that the choice of hour is unlikely to change long-term results.
You can replay your own schedule against real historical prices with the DCA calculator.
Summary written by @parachutesBTC. The original belongs to River; read it for the full text, data and sources.
