Planets in houses · Kendra
Mangal in the 7th house
Mars · Kalatra Bhava
Mangal is the karaka (significator) of energy, courage, siblings and property. The 7th house, called Kalatra Bhava, shows marriage and partnership. When Mangal sits here, these matters take on its colour.
In the 7th house a malefic can bring friction or delay in marriage and partnerships, and calls for patience with others.
The 7th house is a kendra (angular house), a pillar of the chart, so a graha here shows its results openly and strongly.
Mangal gives its best results here when it is exalted in Makara, in its own sign (Mesha and Vrishchika) or in a friendly sign, and when it is not combust.
Results are weaker if Mangal is debilitated in Karka, combust, or afflicted by malefics.
In transit (gochar)
When Mangal transits the 7th house counted from your Moon sign, the period traditionally needs more care.
A single placement is never read alone: sign, aspects, conjunctions, dasha and the whole chart change the outcome.