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UTC to PDT Converter: Convert Pacific Daylight Time

This utc to pdt converter translates Coordinated Universal Time to Pacific Daylight Time and back. Enter a date and time to see the equivalent in both zones, along with a note on whether PDT or PST applies. It runs entirely in your browser so no data is uploaded anywhere.

Result

  • Pacific Time
    07:30 AM PDT
  • Date
    2024-07-15
  • Source (UTC)
    14:30 UTC on 2024-07-15

Pacific Daylight Time (UTC-7) is in effect.

How to use the utc to pdt converter

  1. Select the conversion direction: UTC to Pacific Time, or Pacific Time to UTC.
  2. Enter the year, month, and day of the date you want to convert.
  3. Set the hour (0 to 23) and minute (0 to 59).
  4. Read the converted time below, including whether PDT or PST applies on that date.

How the UTC to PDT Conversion Works

Pacific Daylight Time (PDT) is exactly 7 hours behind Coordinated Universal Time (UTC), written as UTC-7. During standard time, the Pacific zone uses Pacific Standard Time (PST), which is UTC-8.

To convert UTC to PDT, subtract 7 hours from the UTC time. For example, 14:30 UTC on July 15 becomes 07:30 PDT. If the subtraction crosses midnight, adjust the calendar day backward by one. To go the other way using a pdt to utc converter workflow, add 7 hours to the PDT time: 09:15 PDT plus 7 hours equals 16:15 UTC.

The critical step is determining whether the target date falls under daylight saving time or standard time. This utc to pdt converter calculates the exact DST transition dates for the given year so you always get the correct offset.

When Does Pacific Daylight Time Apply?

In the United States, daylight saving time begins on the second Sunday in March at 02:00 local standard time (which is 10:00 UTC) and ends on the first Sunday in November at 02:00 local daylight time (which is 09:00 UTC).

PeriodAbbreviationOffset from UTC
Second Sunday in March to First Sunday in NovemberPDTUTC-7
First Sunday in November to Second Sunday in MarchPSTUTC-8

If you enter a winter date into this tool, it will display PST instead of PDT, because converting UTC to Pacific time requires applying the correct seasonal offset. For dedicated standard-time conversions, see the UTC to PST converter.

Common UTC to Pacific Time Reference

This table shows how common UTC hours map to Pacific time during daylight saving time (PDT, UTC-7). Subtract one more hour for PST dates.

UTCPDT (Summer)PST (Winter)
00:0017:00 (previous day)16:00 (previous day)
08:0001:0000:00
12:0005:0004:00
15:0008:0007:00
18:0011:0010:00
21:0014:0013:00

Scheduling meetings across time zones is easier when you keep this chart handy. Developers coordinating deployments often use UTC internally and translate to local time only for human-facing schedules.

Edge Cases Around DST Transitions

The spring-forward transition creates a gap. On the second Sunday in March, clocks jump from 01:59 PST directly to 03:00 PDT. Local times between 02:00 and 02:59 do not exist on that day, so entering 02:30 in the Pacific Time to UTC direction returns an error instead of a guessed answer.

The fall-back transition in November creates an overlap. When clocks return from 01:59 PDT to 01:00 PST, the hour from 01:00 to 01:59 happens twice. The first occurrence is PDT (UTC-7) and the second is PST (UTC-8). This utc to pdt converter always starts from the unambiguous UTC moment in the UTC to Pacific direction, and for a repeated local time it uses the first occurrence (PDT) and says so in the result note.

Worked examples

ExampleInputResult
Summer afternoon UTC to PacificConversion direction: utc-to-pdt; Year: 2024; Month: 7; Day: 15; Hour (0-23): 14; Minute (0-59): 30Pacific Time: 07:30 AM PDT; Date: 2024-07-15; Source (UTC): 14:30 UTC on 2024-07-15
Winter morning UTC to PacificConversion direction: utc-to-pdt; Year: 2024; Month: 1; Day: 10; Hour (0-23): 8; Minute (0-59): 0Pacific Time: 12:00 AM PST; Date: 2024-01-10; Source (UTC): 08:00 UTC on 2024-01-10
PDT to UTC conversionConversion direction: pdt-to-utc; Year: 2024; Month: 8; Day: 20; Hour (0-23): 9; Minute (0-59): 15UTC: 16:15 UTC; UTC Date: 2024-08-20; Source (Pacific): 09:15 AM PDT on 2024-08-20
DST spring forward boundaryConversion direction: utc-to-pdt; Year: 2024; Month: 3; Day: 10; Hour (0-23): 10; Minute (0-59): 0Pacific Time: 03:00 AM PDT; Date: 2024-03-10; Source (UTC): 10:00 UTC on 2024-03-10

FAQ

What is the difference between PDT and PST?

PDT (Pacific Daylight Time) is UTC-7 and is used during summer months. PST (Pacific Standard Time) is UTC-8 and is used during winter. The switch happens on the second Sunday in March and the first Sunday in November.

How do I convert PDT to UTC?

Add 7 hours to the PDT time. For example, 09:00 PDT plus 7 hours is 16:00 UTC. If the result exceeds 23:59, advance the date by one day. You can also use the pdt to utc converter direction in this tool.

Does Arizona use PDT?

Most of Arizona does not observe daylight saving time and stays on MST (UTC-7) year-round. During summer, Arizona time matches PDT, but in winter it is one hour ahead of PST.

Why does my converted time show PST instead of PDT?

The date you entered falls outside the US daylight saving period. Between early November and mid-March, the Pacific time zone uses PST (UTC-8). This tool automatically selects the correct abbreviation.

Is UTC the same as GMT?

For civil timekeeping they are effectively identical, but UTC is an atomic time standard while GMT is a historical solar time zone. See the GMT converter for more details.

What happens to the time during the spring DST transition?

At 02:00 local time on the second Sunday in March, clocks jump to 03:00. The hour from 02:00 to 02:59 local time does not exist. In UTC terms, the transition happens exactly at 10:00 UTC.