Delhi is 4.5 hours ahead of Amsterdam during European summer (CEST), and 3.5 hours ahead during winter (CET). When it's 9:00 AM in Amsterdam, it's 1:30 PM or 2:30 PM in Delhi.
India uses IST (UTC+5:30) year-round and doesn't observe DST.
Optimal window: 8:00 AM - 1:00 PM Amsterdam time (12:30 PM - 5:30 PM Delhi). Morning calls from Amsterdam catch afternoon business hours in Delhi.
KLM operates direct flights between Amsterdam Schiphol and Delhi Indira Gandhi International Airport.