Astrological sign of a sign are together sufficient to define it, they can be grouped to indicate their symbolism. The first four signs, Aries, Taurus, Gemini and Cancer, form the group of personal signs. The next four signs, Leo, Virgo, Libra and Scorpio form the group of interpersonal signs. The last four signs of the zodiac, Sagittarius, Capricorn, Aquarius and Pisces, form the group of transpersonal signs. Dane Rudhyar presented the tropical zodiac primary factors, used in the curriculum of the RASA School of Astrology. The tropical zodiac is the zodiac of seasonal factors as opposed to the sidereal zodiac (constellation factors).
Sign-on and sign-off can be operated. For broadcasters which do still close for a period each day, the station close most often takes place overnight or during the early hours of the morning. The daily sign-off typically occurs between around 11:00 p.m. and 2:00 a.m. and the station will remain closed until about 5:00 a.m. to 7:00 a.m., although in countries with limited broadcast coverage, sign-off may occur at earlier times, and sign-on later. Sign-off may also vary depending on the day of the week; for example some broadcasters may run for 24 hours on Saturday nights, but sign-off and close during the