PST to EST Time Difference
The standard time difference between Pacific Standard Time (PST) and Eastern Standard Time (EST) is exactly 3 hours. PST operates at UTC-8, while EST operates at UTC-5. Because UTC-5 is 3 hours ahead of UTC-8, Eastern Standard Time is always 3 hours ahead of Pacific Standard Time.
EST = PST + 3 hours Here are quick practical conversion examples during winter standard time:
- 9:00 AM PST = 12:00 PM (Noon) EST (Same day)
- 12:00 PM PST = 3:00 PM EST (Same day)
- 3:00 PM PST = 6:00 PM EST (Same day)
- 6:00 PM PST = 9:00 PM EST (Same day)
- 9:00 PM PST = 12:00 AM (Midnight) EST (Next day)
- 11:00 PM PST = 2:00 AM EST (Next day)
How to Convert PST to EST
Converting PST to Eastern Standard Time (EST) is quick and simple:
- Determine the PST time: Identify your start time in Pacific Standard Time (UTC-8).
- Add 3 hours: Add 3 hours to the PST hour value.
- Check calendar date: If adding 3 hours crosses 11:59 PM (23:59), advance the date to the next calendar day in EST.
PST to EST Conversion Table (24 Hours)
This full 24-hour reference table shows every hour of the day converted from Pacific Standard Time to Eastern Standard Time.
| Pacific Standard Time (PST) | Eastern Standard Time (EST) | Calendar Day Shift |
|---|---|---|
| 12:00 AM | 3:00 AM | Same day |
| 1:00 AM | 4:00 AM | Same day |
| 2:00 AM | 5:00 AM | Same day |
| 3:00 AM | 6:00 AM | Same day |
| 4:00 AM | 7:00 AM | Same day |
| 5:00 AM | 8:00 AM | Same day |
| 6:00 AM | 9:00 AM | Same day |
| 7:00 AM | 10:00 AM | Same day |
| 8:00 AM | 11:00 AM | Same day |
| 9:00 AM | 12:00 PM | Same day |
| 10:00 AM | 1:00 PM | Same day |
| 11:00 AM | 2:00 PM | Same day |
| 12:00 PM | 3:00 PM | Same day |
| 1:00 PM | 4:00 PM | Same day |
| 2:00 PM | 5:00 PM | Same day |
| 3:00 PM | 6:00 PM | Same day |
| 4:00 PM | 7:00 PM | Same day |
| 5:00 PM | 8:00 PM | Same day |
| 6:00 PM | 9:00 PM | Same day |
| 7:00 PM | 10:00 PM | Same day |
| 8:00 PM | 11:00 PM | Same day |
| 9:00 PM | 12:00 AM (+1 day) | Next day |
| 10:00 PM | 1:00 AM (+1 day) | Next day |
| 11:00 PM | 2:00 AM (+1 day) | Next day |
What Is PST?
PST stands for Pacific Standard Time. It operates at an offset of UTC-8.
PST is observed in the US Pacific Time Zone during winter standard time (from the first Sunday in November to the second Sunday in March).
Key areas observing PST include California, Washington, Oregon, Nevada, northern Idaho, and British Columbia in Canada. The IANA timezone identifier is America/Los_Angeles.
What Is EST?
EST stands for Eastern Standard Time. It operates at an offset of UTC-5.
EST is observed in the US Eastern Time Zone during winter standard time (from the first Sunday in November to the second Sunday in March).
Major cities observing EST include New York, Boston, Washington D.C., Atlanta, Miami, and Toronto in Canada. The IANA timezone identifier is America/New_York.
PST vs EST Comparison
| Feature | PST | EST |
|---|---|---|
| Full Name | Pacific Standard Time | Eastern Standard Time |
| UTC Offset | UTC-8 | UTC-5 |
| Difference | EST is 3 hours ahead of PST | |
| Standard Season | November to March | November to March |
| IANA Identifier | America/Los_Angeles | America/New_York |
| Key Cities | Los Angeles, Seattle, San Francisco | New York, Washington D.C., Toronto |
PST vs PDT (Standard vs Daylight in Pacific Region)
It is important to distinguish PST from PDT (Pacific Daylight Time):
- PST (Pacific Standard Time): UTC-8 (Winter: November to March).
- PDT (Pacific Daylight Time): UTC-7 (Summer: March to November).
PDT is 1 hour ahead of PST. When California transitions to Daylight Saving Time in March, local clocks shift from PST to PDT.
EST vs EDT (Standard vs Daylight in Eastern Region)
Similarly, Eastern Time shifts seasonally between two offsets:
- EST (Eastern Standard Time): UTC-5 (Winter: November to March).
- EDT (Eastern Daylight Time): UTC-4 (Summer: March to November).
Pacific Time vs Eastern Time
"Pacific Time" (PT) and "Eastern Time" (ET) are the general regional zone names. The time difference between PT and ET depends on seasonal alignments:
Winter Alignment (PST to EST)
EST is 3 hours ahead of PST
UTC-5 minus UTC-8 = +3 hours
Summer Alignment (PDT to EDT)
EDT is 3 hours ahead of PDT
UTC-4 minus UTC-7 = +3 hours
Is PST Always 3 Hours Behind EST?
During standard time (November to March), PST is strictly 3 hours behind EST. During daylight saving time (March to November), PDT is strictly 3 hours behind EDT. Thus, the practical local time difference between the US West Coast (Los Angeles) and East Coast (New York) remains 3 hours year-round.
Does Daylight Saving Time Affect PST to EST?
Because both the US Pacific and Eastern Time zones observe Daylight Saving Time on the exact same schedule (springing forward on the second Sunday in March and falling back on the first Sunday in November), the 3-hour gap between local West Coast and East Coast clocks never changes.
PST to Eastern Time
When converting PST to generic Eastern Time, the result depends on whether Eastern Time is currently in EST (UTC-5) or EDT (UTC-4):
- PST to EST: Add 3 hours (UTC-8 to UTC-5).
- PST to EDT: Add 4 hours (UTC-8 to UTC-4).
PST to New York Time
New York City operates on Eastern Time. In winter standard time (EST), New York is 3 hours ahead of PST. In summer daylight time (EDT), New York is 4 hours ahead of PST.
PST to Los Angeles & California Time
Los Angeles and the state of California operate on Pacific Time. In winter (November–March), California uses PST (UTC-8). In summer (March–November), California uses PDT (UTC-7).
Does PST to EST Change the Date?
Yes. Because EST is 3 hours ahead of PST, late-evening PST times advance into the early morning of the next calendar day in EST:
- 9:00 PM PST ➔ 12:00 AM (Midnight) EST next day
- 10:00 PM PST ➔ 1:00 AM EST next day
- 11:00 PM PST ➔ 2:00 AM EST next day
Best PST to EST Meeting Times
Coordinating meetings between West Coast (PST) and East Coast (EST) teams is relatively easy due to the 3-hour offset. The most productive overlap windows occur:
Morning West Coast / Afternoon East Coast
9:00 AM PST ➔ 12:00 PM EST
Ideal for morning standups in California while East Coast teams head to lunch.
Midday West Coast / Late Afternoon East Coast
1:00 PM PST ➔ 4:00 PM EST
Great for joint project reviews before the East Coast workday concludes.
Late West Coast Afternoon / End of Day East Coast
2:00 PM PST ➔ 5:00 PM EST
Final daily handoffs between West Coast teams and East Coast offices.
Practical Uses of PST to EST Conversion
Tech & Entertainment Collaboration
Silicon Valley tech companies and Hollywood studios communicate daily with Wall Street investors and New York media agencies.
E-Commerce & National Logistics
National shipping lines and e-commerce platforms schedule order cutoffs and delivery estimates across West and East Coast hubs.
Financial Markets
Traders on the West Coast wake up early (6:00 AM PST) to participate in the New York Stock Exchange opening bell at 9:30 AM EST.
National Broadcasting & Sports
Live television broadcasts, NFL games, and concerts schedule prime-time airings (e.g., 5:00 PM PST / 8:00 PM EST) to maximize nationwide viewership.
Frequently Asked Questions
How many hours is PST behind EST?
Pacific Standard Time (PST, UTC-8) is 3 hours behind Eastern Standard Time (EST, UTC-5). When it is 12:00 PM PST in Los Angeles, it is 3:00 PM EST in New York.
How do I convert PST to EST?
To convert PST to EST, add 3 hours to the PST time. For example, 9:00 AM PST plus 3 hours equals 12:00 PM (noon) EST.
What is PST?
PST stands for Pacific Standard Time. It operates at UTC-8 during winter standard time in the US Pacific Time Zone (including California, Washington, Oregon, and Nevada).
What is EST?
EST stands for Eastern Standard Time. It operates at UTC-5 during winter standard time in the US Eastern Time Zone (including New York, Florida, Georgia, and Toronto).
Is PST always 3 hours behind EST?
When both regions are on standard time (November to March), PST (UTC-8) is exactly 3 hours behind EST (UTC-5). When both regions observe daylight saving time (March to November), Pacific Daylight Time (PDT, UTC-7) remains 3 hours behind Eastern Daylight Time (EDT, UTC-4). However, during brief transition weeks or if comparing fixed standard/daylight offsets, the difference can shift.
What is the difference between PST and PDT?
PST (Pacific Standard Time, UTC-8) is observed from November to March. PDT (Pacific Daylight Time, UTC-7) is observed from March to November during Daylight Saving Time. PDT is 1 hour ahead of PST.
What is the difference between EST and EDT?
EST (Eastern Standard Time, UTC-5) is observed from November to March. EDT (Eastern Daylight Time, UTC-4) is observed from March to November during Daylight Saving Time. EDT is 1 hour ahead of EST.
Does daylight saving time affect PST to EST?
Both the US Pacific and Eastern Time zones transition into daylight saving time on the same dates in March and November. Therefore, the 3-hour difference between local West Coast time and East Coast time stays constant throughout the year.
What time is 12 PM PST in EST?
12:00 PM (noon) PST is 3:00 PM EST on the same day.
What time is 8 PM PST in EST?
8:00 PM PST is 11:00 PM EST on the same day.
Does PST to EST change the date?
Yes, for late evening PST times. PST times from 9:00 PM to 11:59 PM roll over into the early morning hours of the next calendar day in EST (e.g., 9:00 PM PST = 12:00 AM EST next day; 11:00 PM PST = 2:00 AM EST next day).
Is Pacific Time the same as PST?
Pacific Time (PT) is the generic zone name. It uses PST (UTC-8) during winter standard time and PDT (UTC-7) during summer daylight saving time.
Is Eastern Time the same as EST?
Eastern Time (ET) is the generic zone name. It uses EST (UTC-5) during winter standard time and EDT (UTC-4) during summer daylight saving time.