Beyond the holiday effect, CoinGecko's study also examined whether the day of the week a person buys Bitcoin has any meaningful impact on returns. At short horizons, Monday and Wednesday tied as the strongest days with average next-day returns of 0.38%, while Thursday was the only day to post a negative average at 0.09%. The gap between weekdays and weekends was just 0.01%, far narrower than more well-documented seasonal patterns like Bitcoin's October bullish seasonality, commonly referred to as Uptober.

Over longer time horizons, the day-of-week effect essentially disappears entirely. On a 365-day horizon, every weekday produced annual returns clustered tightly between 142.15% and 144.56%, a spread CoinGecko described as negligible relative to Bitcoin's overall volatility. The data suggests that while holiday timing may offer marginal value for very short-term traders looking for an edge at specific moments, the day someone chooses to buy Bitcoin during a regular trading week has virtually no bearing on where their investment ends up a year later. For long-term holders, the research reinforces what most already believe: timing the market by day or holiday matters far less than simply staying in the market through its inevitable swings.