Brahma Muhurta is the auspicious period of roughly 96 to 48 minutes before sunrise. Traditionally the best time to wake, meditate, do yoga and study, it is prized for its calm, sattvic quality before the day begins.
It begins about 1 hour 36 minutes before sunrise and ends about 48 minutes before sunrise, so it depends entirely on your location's sunrise for the day.
The pre-dawn air and quiet are considered ideal for meditation, memory and spiritual practice. Many traditions recommend rising in this window for health and focus.
For educational purposes. Astrological interpretations are traditional and not a substitute for professional advice.