Sensor for the first occurrence of the month

[igrybkov]

Hello,
My waste disposal company picks up yard trimmings with the first recycle of the month. Unfortunately, they do not expose it as a separate entry in the calendar.
Is there any way I can configure a sensor to count days to the first occurrence of an event (recycle pick up in my case) of the month?
Thank you!

[igrybkov]

I came up with some solution. Not as elegant as I expected, but it works. So, 1st things I needed was to changed recycling sensor details format to "Generic" so I can have all upcoming dates in a single list.

Then I created new template entity that calculates days until the first recycling of a month.

{% if state_attr('sensor.days_until_recycle_pickup', 'upcoming') | length > 0 %}
{% for pickup in state_attr('sensor.days_until_recycle_pickup', 'upcoming') -%}
  {%- if pickup.date.day < 14 %}{{ ((pickup.date) - now().date()).days }}{% break %}{% endif -%}
{%- endfor %}
{% endif %}