Calendar of non-working days
The non-working days for the year 2023 are established in https://boe.es/boe/dias/2022/12/16/pdfs/BOE-A-2022-21309.pdf, https://www.bocm.es/boletin/CM_Orden_BOCM/2022/12/29/BOCM-20221229-27.PDF y https://www.bocm.es/boletin/CM_Orden_BOCM/2022/12/21/BOCM-20221221-29.PDF
You can consult them month by month on the following calendar.