Welcome @Lunaa It is a rule of this forum for all new members to properly introduce themselves, so PLEASE CLICK ON THE IMAGE BELOW and tell us about yourself and any experience you may have in magick, such as what you practice, how long you have practiced, areas of interest, etc:
PS: Suhn’tal’ock is a Nether Lord under Azazel and can be called upon any day or time so there is no specific astrological timing required.