When we talk about "affixing a date to" something, we are typically referring to the act of setting a specific date or deadline for a particular task or event. There are many different words and phrases that can be used to convey this same meaning, including "setting a date," "establishing a deadline," "determining a timeline," "fixing a day," "scheduling," and "arranging a time frame." Each of these phrases can be used interchangeably to describe the act of putting a specific date or deadline in place for a particular task or event, and can help to convey a sense of urgency and importance around completing that task or event within a specific timeframe.