The phrase "time window" refers to a specific period of time during which a particular task or event is scheduled to occur or when certain actions can take place. Full definition
Those will often have a short time window for submissions. (annerallen.com)
Intermittent fasting generally means that you consume your calories during a specific time window of the day and choose not to eat food for a larger window of time. (bodyketosis.com)
Once you've confirmed that the seller sent the bitcoin by checking the blockchain, you will need to submit your payment within a specified time window in order to complete the transaction. (finder.com)