Mercury in the 1st house of the solar return
Mercury in the 1st house of the solar return makes the year intellectually lively and sociable. The person studies, talks and negotiates more and quickly grasps what is new.
The first house of the annual chart sets the tone of the year and one's sense of self. Mercury here gains directional strength (dig bala) and is considered strong: it gives resourcefulness, ease in communication and interest in study and new skills. It is a good time for negotiations, publications, and business and trade initiatives.
The difficulty is scattered attention and nervous strain from an excess of information. It helps to set priorities and not to take on too much at once.
Strength of the placement in the annual chart
Mercury in Virgo or Gemini in the solar return is especially fortunate; in Pisces or near afflicting planets it is prone to restlessness and inaccuracies. Extra weight is given by a connection of Mercury with the muntha — a point that moves one sign on from the natal lagna each year — and by the planet's part in choosing the lord of the year (see the overview of the solar return).
The natal side of the topic is covered in the article Mercury in the 1st house, the general meanings of the house in the 1st house of the horoscope. You can cast your own chart on the home page of the site.
