Create a Table of all Sundays within a Year

I realize you already have an Excel solution, but if you want to use pipelines, this jinja will generate all the Sunday dates in a specified year separated by a semicolon:

{% set startDate = time.parse("1/1/2024") -%}
{% set endDate = startDate + time.delta(month=12,day=31) -%}
{% set numDays = (endDate - startDate).days -%}
{% for x in range(0, numDays + 1) -%}
{% set dateRec = startDate + time.delta(days=x) -%}
{% if (dateRec.weekday() == 6) -%}
{{ dateRec|date_ymd }}{{ ';' if not loop.last }}
{%- endif -%}
{% endfor -%}

Use in a Regex search step and a loop of the results.