Manila is typically 13 hours ahead of New York. When it's 9:00 AM in New York, it's 10:00 PM in Manila. Philippines does not observe DST, but New York does.
During US daylight saving time (March to November), the difference is 12 hours. During US standard time, Manila is 13 hours ahead.
Optimal meeting window: 8:00 PM - 10:00 PM New York time (8:00 AM - 10:00 AM Manila next day in DST, or 9:00 AM - 11:00 AM in winter). Evening New York catches morning Manila.
The Philippines has a massive BPO industry serving US companies. Many US corporations have call centers, software development, and back-office operations in Manila, driving constant communication needs.