Those who meddle with astrologers and sorcerers (and like practices) put themselves on a collision course with God's judgment.
Many unsaved people practice astrology (i.e., horoscopes) and other unscriptural use of the signs in the heavens. Believers should reject these practices.
Some Bible teachers have suggested that there are specific times of the day in which believers ought to go to the Lord in prayer. In Psalm 5:3, David vowed to present his prayers before the Lord in the morning. In the 88th psalm, the psalmist acknowledged that he prayed to the Lord day and night (Psalm 88:1). Of course, many know about the pattern followed by Daniel, even in the face of persecution, when he sought the Lord three times a day (Daniel 6:10). From these passages, one might suggest that there are specific times of prayer, but according to 1 Thessalonians 5:17, believers are to pray without ceasing. In other words, believers ought to always be in a constant state of prayer before the Lord.
