In Notion, you can type the @ symbol and use the smart function to say today, tomorrow, yesterday. It will input the word that you used let's say I typed @today. It would display as today in that dynamic text, if I opened the item up tomorrow it would say yesterday in that dynamic text and then it would roll to a date as time passed. This was an extremely useful feature in note taking, documents, and tasks to be able to say today and it would fill in the date so we know what day the meeting occurred. I also used in in tasks where I would be setting something up for the future and I would say @today I did... then when I opened it up in the future it would show date. Documenting calls, conversations etc. to be able to say yesterday this happened today this happened and not have to worry about filling in dates.