PDT to Colombo
+12h 30mPDT
PDTSOURCEColombo
ISTGreen rows indicate typical business hours (9 AM - 5 PM)
PDT and IST on the World Map
The map below highlights the PDT (Pacific Daylight Time) and IST (India Standard Time) timezone regions across the globe.
PDT – Pacific Daylight Time
UTC-07:00Pacific Daylight Time (PDT) is the daylight saving offset on the US/Canada Pacific coast, 7 hours behind UTC.
- •PDT aligns with MST at UTC-07:00.
- •Tech company earnings calls often reference PDT/PST times.
IST – India Standard Time
UTC+05:30India Standard Time (IST) is the time zone for India and Sri Lanka, 5 hours and 30 minutes ahead of UTC.
- •India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT.
- •India uses a single time zone despite spanning 30° of longitude.
- •IST is one of only a handful of time zones with a 30-minute offset.
- •IST is the most populous single time zone in the world with over 1.4 billion people.
- •The Bombay Stock Exchange (BSE) and National Stock Exchange (NSE) operate on IST.
About Colombo
WikipediaColombo operates on Sri Lanka Time (SLST), UTC+5:30. Sharing India's timezone, Colombo is a key South Asian trade and tourism hub.
Sri Lanka Standard Time (SLST) uses UTC+5:30, same offset as India.
Everything You Need to Know About PDT and Colombo Time
PDT runs on Pacific Daylight Time (PDT) at UTC-07:00. Colombo runs on India Standard Time (IST) at UTC+05:30. That puts PDT 12 hours 30 minutes ahead of Colombo — a difference of +12h 30m at the current offsets.
In practice, when it is 9:00 AM in PDT it is 9:30 PM in Colombo. Midnight in PDT is 12:30 PM in Colombo. Neither zone observes daylight saving time, so the offset between them stays constant all year.
PDT to Colombo time conversion table
| PDT (PDT) | Colombo (IST) | Day |
|---|---|---|
| 12:00 AM | 12:30 PM | same day |
| 6:00 AM | 6:30 PM | same day |
| 7:00 AM | 7:30 PM | same day |
| 8:00 AM | 8:30 PM | same day |
| 9:00 AM | 9:30 PM | same day |
| 12:00 PM | 12:30 AM | next day |
| 3:00 PM | 3:30 AM | next day |
| 5:00 PM | 5:30 AM | next day |
| 6:00 PM | 6:30 AM | next day |
| 9:00 PM | 9:30 AM | next day |
Why people convert PDT to Colombo time
- Scheduling a call from PDT to Colombo: a 10:00 AM start in PDT lands at 10:30 PM in Colombo, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +12h 30m gap: PDT and Colombo have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in Colombo is 9:30 PM in PDT.
- Coordinating a PDT-based team with Colombo contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM PDT" is unambiguous; "3 PM" across a +12h 30m gap is not.
- With a +12h 30m gap there is no shared 9-to-5 window, so alternate the early start: one week PDT takes the early slot, the next week Colombo does.
About PDT (Pacific Daylight Time)
Pacific Daylight Time (PDT) is observed from March to November on the Pacific coast. During PDT, the west coast is 7 hours behind UTC and only 2 hours behind the east coast's EDT.
About IST (India Standard Time)
India Standard Time (IST) is the time observed throughout India and Sri Lanka. It is based on the 82.5°E meridian, passing through Mirzapur in Uttar Pradesh. India uses a single time zone despite spanning roughly 30° of longitude, which has been debated. IST does not observe daylight saving time. India is the world's most populous country, making IST one of the most-used time zones globally. The IT outsourcing industry and call centers operate primarily on IST, making the EST-to-IST conversion one of the most searched timezone conversions.
Best time to call between PDT and Colombo
With a +12h 30m offset there is no overlap inside a normal 9 AM – 5 PM day. Colombo opens at 9:00 AM IST, which is 9:30 PM in PDT, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
PDT and Colombo have no shared working hours because of the +12h 30m gap. Teams need to alternate early starts or rely on asynchronous handovers.
PDT is 12 hours 30 minutes ahead of Colombo (PDT UTC-07:00 → IST UTC+05:30). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
PDT
☀ Currently in DST
Standard: UTC-08:00 · DST: UTC-07:00
Clocks fall back on Sun, Nov 1, 2026
Colombo
Does not observe DST
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between PDT and Colombo?
PDT (PDT, UTC-07:00) is 12 hours 30 minutes ahead of Colombo (IST, UTC+05:30). The gap is currently +12h 30m.
How do I convert PDT time to Colombo time?
Add +12h 30m to PDT local time. For example, 9:00 AM in PDT is 9:30 PM in Colombo.
What time is it in Colombo right now?
Colombo uses IST at UTC+05:30. Use the live converter at the top of this page — it updates in real time and already accounts for the +12h 30m offset from PDT.
What is the best time to call Colombo from PDT?
There is no shared working-hours window because of the +12h 30m gap. The closest option is 1:00 PM in PDT, which is 1:30 AM in Colombo.
Which is ahead, PDT or Colombo?
PDT is 12 hours 30 minutes ahead of Colombo. When it is 12:00 PM in PDT it is 12:30 AM in Colombo.
Do PDT and Colombo use different time zones?
PDT uses PDT at UTC-07:00, while Colombo (Sri Lanka) uses IST at UTC+05:30. The IANA identifiers are America/Los_Angeles and Asia/Colombo.
Does daylight saving time affect the PDT–Colombo difference?
Neither zone observes daylight saving time, so the +12h 30m offset between PDT and Colombo is fixed all year.
Which other cities share PDT's time zone?
PDT also covers Los Angeles, San Francisco, Seattle, Vancouver, Portland.
Which countries use PDT, PDT's zone?
PDT is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Is there a day difference between PDT and Colombo?
Sometimes. The +12h 30m gap is large enough that 8:00 PM or later in PDT already falls on the next day in Colombo.
What is the time difference between PDT and Colombo?
Colombo is +12h 30m from PDT.
What timezone is PDT in?
PDT operates on its local timezone.
What timezone is Colombo in?
Colombo operates on Sri Lanka Time (SLST), UTC+5:30. Sharing India's timezone, Colombo is a key South Asian trade and tourism hub.
What are the business hours in Colombo?
Standard business hours in Colombo are 9:00 AM - 5:00 PM IST.
Which countries use PDT (Pacific Daylight Time)?
PDT is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Does PDT observe daylight saving time?
Yes, PDT switches to PST during summer months.
What are some interesting facts about PDT?
PDT aligns with MST at UTC-07:00. Tech company earnings calls often reference PDT/PST times.
Which cities are in the IST timezone?
Major cities in the IST timezone include Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad, Pune, Ahmedabad.
What is the UTC offset for IST?
India Standard Time (IST) is at UTC+05:30.
What should I know about the IST timezone?
India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT. India uses a single time zone despite spanning 30° of longitude.
When is it midnight in PDT, what time is it in Colombo?
When it is 12:00 AM (midnight) in PDT (PDT), it is +12h 30m later in Colombo (IST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More PDT time conversions
- pdt to los angeles
- pdt to pst
- pdt to new york
- pdt to london
- pdt to dubai
- pdt to tokyo
- pdt to singapore
- pdt to sydney
- pdt to paris
- pdt to delhi
- pdt to mumbai
- pdt to berlin
- pdt to hong kong
- pdt to toronto
- pdt to kathmandu
- new york to pdt
- london to pdt
- dubai to pdt
- tokyo to pdt
- singapore to pdt
- sydney to pdt
- los angeles to pdt
- paris to pdt
- delhi to pdt
- mumbai to pdt
- berlin to pdt
- hong kong to pdt
- toronto to pdt
- kathmandu to pdt
See every conversion from PDT →·See every conversion from Colombo →