Planets in houses · Upachaya
Surya in the 3rd house
Sun · Sahaja Bhava
Surya is the karaka (significator) of soul, father, authority and vitality. The 3rd house, called Sahaja Bhava, shows courage, siblings and effort. When Surya sits here, these matters take on its colour.
In the 3rd house a malefic is at its best: it gives courage, initiative and the will to win through effort.
The 3rd house is an upachaya (house of growth): results improve steadily with time and effort.
Surya gives its best results here when it is exalted in Mesha, in its own sign (Simha) or in a friendly sign, and when it is not combust.
Results are weaker if the Sun is debilitated in Tula or afflicted by Saturn or Rahu.
In transit (gochar)
When Surya transits the 3rd house counted from your Moon sign, the period is traditionally favourable.
A single placement is never read alone: sign, aspects, conjunctions, dasha and the whole chart change the outcome.