Timezone Q&A

What time is 10am PDT in EDT?

10:00 AM PDT is 1:00 PM EDT. This conversion is useful for West Coast to East Coast meetings, but the date still matters around daylight-saving transitions.

When this helps: Use this when you need a direct time conversion before sending an invite. Check the exact date

Fast answer

Add three hours to Pacific Daylight Time to get Eastern Daylight Time.

Meeting implication

10:00 AM Pacific is often a reasonable default for US cross-coast meetings because the East Coast is still inside afternoon working hours.

Use date-aware conversion

If the date is near a clock change, use a date-aware converter instead of memorized offsets. PDT and EDT are daylight-time labels, so they should only be used when both regions are actually in daylight-saving time.

When PDT and EDT are safe

Use PDT and EDT only when the event date is during daylight-saving time for both regions. If someone writes Pacific Time or Eastern Time instead, let the date determine whether the calendar should display standard time or daylight time. This prevents a fixed abbreviation from drifting away from the real local clock.

Examples

  • 10:00 AM PDT is 1:00 PM EDT for a live cross-coast meeting.
  • If the date is outside daylight-saving time, the labels may become PST and EST instead.

Before you send it

  • Use PDT/EDT only when the date is in daylight-saving time.
  • Use Pacific Time and Eastern Time for calendar invites when the date should decide the offset.
  • Check date rollover for late evening West Coast times.
  • If the event is in winter, verify whether PST to EST is the correct label instead.
  • For recurring cross-coast meetings, re-check after the next daylight-saving transition.
  • When sending an external invite, include the city names so recipients do not have to trust abbreviation math.