JST to PHT Time Converter

When it is 9:00 AM JST, it is 8:00 AM PHT. Philippine Time (PHT, UTC+8) is 1 hour behind Japan Standard Time (JST, UTC+9). Your working-hours overlap window is 10:00 AM–5:00 PM JST (9:00 AM–4:00 PM PHT).

JST to PHT Conversion Table

Major Cities Using JST and PHT

Japan Standard Time (JST): Tokyo, Osaka, Kyoto, Yokohama.

Philippine Time (PHT): Manila, Cebu, Quezon City.

How many hours between JST and PHT?

JST is UTC+9 and PHT is UTC+8, a difference of 1 hour. PHT is behind JST. This difference can shift by an hour in either direction during Daylight Saving Time transitions — if one zone observes DST and the other doesn't, the offset narrows or widens for part of the year.

Business Hours Overlap: JST ↔ PHT

Assuming a 9:00 AM – 5:00 PM workday on each side, your working-hours overlap window is 10:00 am–5:00 pm jst (9:00 am–4:00 pm pht). To visualize this instantly for any pair of cities, use the visual meeting planner or the timezone overlap finder — both highlight the green overlap window on a live timeline.

Does JST observe Daylight Saving Time?

Japan Standard Time (JST) is based on the Asia/Tokyo IANA timezone. DST observance depends on the jurisdiction — for example, most of the continental US switches between standard and daylight time, while India, Japan, and most of Southeast Asia do not observe DST at all. WorldClock.lol uses the authoritative IANA timezone database, so every conversion automatically accounts for the correct DST rules on the date you're converting.

When is 9 AM JST in PHT?

When it is 9:00 AM in Japan Standard Time (JST, UTC+9), it is 8:00 AM in Philippine Time (PHT). For other times of day, scan the conversion table above or drop into the interactive converter to pick an exact minute. The converter handles both standard and daylight variants correctly.

How to Use This JST to PHT Converter

1. Type or drag any time in the JST input above — the PHT equivalent updates instantly.
2. Check the day indicator. When the converted time crosses midnight, the tool shows +1 day or −1 day so you don't book a meeting on the wrong date.
3. Copy the shareable URL to send the specific conversion to a colleague — the link preserves your exact selection.
4. Switch directions by swapping the input zones, or open PHT to JST for the reverse.

Related JST Converters

• JST to EST
• JST to PST
• JST to GMT
• JST to UTC
• JST to IST
• JST to CET

Related PHT Converters

• EST to PHT
• PST to PHT
• GMT to PHT
• UTC to PHT
• IST to PHT
• CET to PHT

More Time Tools

• All Time Zone Converters — browse every supported pair
• About JST (Japan Standard Time) — current time, cities, DST rules
• About PHT (Philippine Time) — current time, cities, DST rules
• Meeting Planner — find the best time for a multi-city meeting
• Best Time to Call — optimal calling windows between any two cities
• UTC Time Now — the reference point for every conversion
• DST Schedule 2026 — every daylight-saving transition this year