Finding last day of each month

Here is an example of using the date() function to create date objects and the |date_modify filter to find the last day of each month in a given year.

• automation
• output

• start:
    return:
      output@text:
        {% for mo in range(1,12) %}
        {{date('2028-' ~ mo)|date_modify('last day of this month')|date('r')}}
        {% endfor %}

• __return:
    output: |
      Mon, 31 Jan 2028 00:00:00 -0800
      Tue, 29 Feb 2028 00:00:00 -0800
      Fri, 31 Mar 2028 00:00:00 -0700
      Sun, 30 Apr 2028 00:00:00 -0700
      Wed, 31 May 2028 00:00:00 -0700
      Fri, 30 Jun 2028 00:00:00 -0700
      Mon, 31 Jul 2028 00:00:00 -0700
      Thu, 31 Aug 2028 00:00:00 -0700
      Sat, 30 Sep 2028 00:00:00 -0700
      Tue, 31 Oct 2028 00:00:00 -0700
      Thu, 30 Nov 2028 00:00:00 -0800
      Sun, 31 Dec 2028 00:00:00 -0800