Binance Futures allows you to hold positions indefinitely, as there is no specific time limit on how long you can keep them open. However, it is essential to know the risks and costs associated with holding futures positions for an extended period, especially when using high leverage. While holding a position, you may be subject to funding fees, which are charged or credited to your account based on the difference between the perpetual swap and the mark price. These funding fees can vary and may affect your overall profitability when holding positions for a long time.