Pranams

I was wondering if it is more spiritually beneficial to have a Guru's [or jivanmukta or saint's] darshan on spiritually charged holy days like mahashivaratri, mauni amavasya, gitajayanti etc or is Guru's Grace equal on all days for a devotee? If one wishes for Guru's darshan is it advised by our scriptures/sages to choose holy days over usual ones?