date_modify(modifier)
is a Twig filter to modify a date with a given modifier string:
{{ post.published_at|date_modify("+1 day")|date("m/d/Y") }}
The date_modify filter accepts strings (it must be in a format supported by the strtotime function) or DateTime instances. You can combine it with the date filter for formatting.
- modifier: The modifier
Source: Twig