Delhi is 4.5 hours ahead of Berlin (winter) or 3.5 hours ahead (summer). When it's 12:00 PM in Berlin, it's 4:30 PM in Delhi. India does not observe DST.
Berlin uses CET/CEST while Delhi uses IST (India Standard Time).
Optimal window: 10:00 AM - 2:00 PM Berlin time (2:30 PM - 6:30 PM Delhi). Late morning calls from Berlin reach afternoon business hours in Delhi.
Germany is India's largest trading partner in the EU, with strong automotive and engineering ties.