Hello @pmjchan,
Great question!
Although it is possible to display the current date and time the email was sent out and even display a time X-days later; it is currently not possible to calculate X-hours later.
To display the current date and time, you can use the following syntax: {% today "%m/%d/%Y %I:%M" as today %} {{ today }}
which would display as 07/02/2021 04:05. You can also re-order and redisplay how the dates and time is rendered by referencing the Django filters and tags available here: https://docs.djangoproject.com/en/1.8/ref/templates/builtins/
Furthermore, if you did decide to opt-in to using X-days later instead, @retention has a great answer in the following Community post. I would also suggest taking a look at the How to Format Date Variables in Templates article to learn more about formatting dates within a template.
I hope this helps!
David