BST to EST

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BST is the UK's summer offset (UTC+1); in winter the UK is on GMT. See that conversion →

EST is the standard (winter) offset for US Eastern. From mid-March to early November those clocks run on EDT (UTC−4) for daylight saving.

What is the BST to EST time difference?

EST is 6 hours behind BST. BST is British Summer Time at a fixed UTC+1, and EST is Eastern Standard Time at UTC−5. Because both are named constant offsets rather than city clocks, the gap does not move — the 24-hour table above reads the same every day of the year. To convert by hand, subtract 6 hours from the BST time.

What time is 9 AM BST in EST?

9 AM BST is 3:00 AM EST. That follows from the gap of 6 hours between UTC+1 and UTC−5, so every BST hour moves by the same amount. The full 24-hour table above lists every hour, so you can convert any BST time to EST at a glance. Because both are fixed offsets, that mapping is identical on any date — there is no daylight-saving exception to remember.

Is BST ahead of or behind EST?

EST is 6 hours behind BST, which is the same as saying BST is 6 hours ahead of EST. That comes straight from the two offsets: UTC+1 for BST against UTC−5 for EST. So at the same instant, 9:00 AM on BST reads 3:00 AM on EST. Both are fixed named offsets, so the direction and the size of that gap hold all year.

Does BST to EST change with daylight saving?

The BST↔EST offset itself never changes: UTC+1 to UTC−5 is a constant 6 hours gap. Note: BST is the UK's summer offset (UTC+1); in winter the UK is on GMT. EST is the standard (winter) offset for US Eastern. From mid-March to early November those clocks run on EDT (UTC−4) for daylight saving. What can change is which abbreviation a region is using at a given date, which is why the notes above link across to the matching conversion. Converting between the named offsets themselves, as this page does, is the same arithmetic on every day of the year.