Can looking at the sun through solar viewing eclipse shades everyday harm your eyes?
It depends on the quality of glasses and intensity, nature and degree of harmfulness of sunrays which you are watching to. Every eclipse has different intensity so as it can harm you.

When there was a solar eclipse around 3-4 years ago, it was a full solar eclipse. That time I watched it from my school with total naked eyes. My eyes were not harmed from that, but my school principle did.

But I still recommend you to not to watch it directly, use projectors which would allow you to get the view without directly watching the sun. Only use original products which are being certified.