The fairest hour to put a recurring call across all three, not just the one that suits the West. Drag the marker to test any slot — the map shows who’s in daylight and who takes the hit.
New York, London and Bangalore span United States, United Kingdom and India. This is the outsourcing and product-development triangle, with Bangalore standing in as India's tech capital. Because the three cities run from west to east, no single hour sits inside everyone’s working day, so the question is which city takes the stretch.
The fairest recurring slot lands in around midday UTC. It sits close to the working day in all three cities — an unusually kind corridor, with no one pushed far past their hours. Spreading the load and minimising the total agree here, so there is no cheaper option that would not fall on one city. The exact time is computed live below and shifts by up to an hour around daylight-saving transitions.
Each city’s core day is 9:00–17:00 (zero cost). Outside it, an hour later hurts less than an hour earlier — staying online past five beats waking before eight — so the penalty curve is asymmetric. Fair minimises the worst-off city first (leximin); Efficient minimises the total. Both land on the working-hours frontier — Fair just refuses to let one city absorb the whole gap.