How can I add 30 days to a date variable in Liquid?

[Cwilliams44]

Hello! 

I am trying to create a section on our site that displays when an item was prepared, and also references an expiration date, which is 30 days later. 

How exactly could this be done? 
So far I have the following: 

...

 <span>Prepared: {{ created_at | date: "%B %d, %Y" }}</span>

...

Which outputs the date in the format February 22, 2022 (for example)

How can I easily make another line that says Expires: and adds 30 days to the above date? 

I appreciate any assistance 🙂 

Thanks

[shadowsfall118 · Accepted solution]

Take a look at this:

https://www.huratips.com/tech-tips/how-to-add-days-to-date-in-shopify-liquid.html

{% assign date = '2015-04-20' | date: '%s' %}
{% assign seconds = 5 | times: 24 | times: 60 | times: 60 %}
{{ date | date: "%s" | plus: seconds | date: "%Y-%m-%d" }}

[Cwilliams44]

Thank you very much! 

That worked perfect. 

for the assign date I just put {% assign date = created_at %} and it worked flawless.