Chennai is 14.5 hours ahead of Anchorage
Best overlap: 5:30 PM to 6:30 PM in Anchorage is 8:00 AM to 9:00 AM in Chennai.
Your window to reach both cities is 5:30 PM to 6:30 PM in Anchorage, which converts to 8:00 AM to 9:00 AM in Chennai. The shared window is only 1 hour — treat 5:30 PM in Anchorage (8:00 AM in Chennai) as the one fixed point and plan everything else around it. Worth a glance at the calendar — Chennai is on the next day, so align on the date as well as the time. One seasonal catch: Anchorage springs forward and falls back, but Chennai doesn't, so the gap changes by an hour for several months of the year.