Text Blaze can insert the current date. Today is {time: MMMM D, YYYY}. You can customize the date formatting. For example, {time: MMM D} or {time: YYYY-MM-DD}.
You can also insert a date relative to the present. In 2 weeks, it will be {time: MMMM D, YYYY; shift=2W}; and in one month it will be {time: MMMM D, YYYY; shift=1M}.
Learn more about dates and times here: https://blaze.today/commands/time/