Can I recharge a Canaith Mandolin in Avernus? [duplicate]

I just got a Canaith Mandolin while being in Avernus and there is something in the description that I would like to clarify.

If I understand well, in Avernus, there isn’t any dawn. No sunrise.

Does that mean that if I stay in Avernus I won’t be able to recharge my Canaith Mandolin spells ?

The description says

A bard playing a Canaith mandolin could invoke the spells […] each once a day, until the instrument recharged its magic at the next dawn.