Uttara Phalguni is the twelfth, ruled by the Sun, its symbol the back legs of the same bed, its deity Aryaman — god of contracts, marriage and patronage.
Mechanically it's the other end of the previous nakshatra's bed: Purva is lying down (enjoyment), Uttara is the legs holding it up (commitment). The Sun as ruler supplies steady light and responsibility; Aryaman supplies 'what was agreed counts'. So this segment is about turning a relationship into an institution: marriage, partnership, long-term care — not the passionate stretch but the stretch that's still there once the passion has passed.
Where you'll recognise it: you do what you said, people treat you as their backing, you take promises seriously, you help without keeping score, you find betrayal especially hard to bear, and other people's business often comes before your own. Running well, you're the most trustworthy: giving people security, holding relationships and organisations up, generous without display. Stuck, you're drained — carrying too much, unable to say no, or using 'I promised' to hold down a view of yours that has actually changed. Before it the bed's other end; after it Hasta, the hand: once you're holding things up, the hand has to make something.
