IST vs BST — cities and working rhythm
Indian business hours run 10 AM – 7 PM IST typically; IT / BPO shifts commonly extend to cover US and UK working hours, so 3:30 PM – 12:30 AM IST (US overlap) and 12:30 PM – 9 PM IST (UK overlap) are the two second shifts you see most often. Weekend is Saturday-Sunday for most private-sector employers.
Compensação de verão no Reino Unido/Irlanda (último domingo de março até o último domingo de outubro) — UTC+1, igual ao CET. Durante o BST, Londres se alinha com o horário de trabalho da Europa continental, em vez do intervalo padrão de 1 hora. O inverno volta para GMT (UTC+0).
Intervalo de tempo: BST is 4,5 hours atrás IST (standard-time offsets — daylight-saving flips shift this by an hour twice a year in most northern-hemisphere zones).