This simple user macro renders current timestamp on the page (please note that it uses server's time)
Online demo
Thu Nov 14 09:00:17 EET 2024
User macro code
## @noparams $content.currentDate
Full configuration
Also you can extend this to print out date and time using formatting options you have configured in your Confluence and in user's timezone
$action.dateFormatter.formatDateTime($content.currentDate)
Nov 14, 2024 09:00