When planning an event or meeting, it is common to use the phrase "fix date of" to indicate when it will take place. However, there are several synonyms that can be used to convey the same message. For example, you could use phrases like "set the date for," "schedule the event on," "establish the meeting time," "arrange the appointment for," or "determine the gathering day." These variations not only add variety to your language but also make your communication more effective, as different people might respond better to different phrases. So, next time you need to fix a date, try using a synonym to liven up your conversation.