ADT to AST Converter

Convert Atlantic Daylight Time (ADT) to Atlantic Standard Time (AST) instantly

PST - Pacific Standard Time

-1 hrs

Wed, Jul 15, 2026

EST - Eastern Standard Time

--:-- --

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ADT to AST Conversion Table

The table below shows hourly time conversions from Atlantic Daylight Time (ADT) to Atlantic Standard Time (AST). AST is -1 hours from ADT. Business hours (9 AM - 5 PM) are highlighted in blue for easy scheduling across these time zones.

ADT	AST	Note

About ADT & AST

Atlantic Daylight Time (ADT)

UTC Offset: UTC-3

Regions: Nova Scotia, New Brunswick (Mar-Nov)

Atlantic Standard Time (AST)

UTC Offset: UTC-4

Regions: Puerto Rico, Nova Scotia, Caribbean

What time is it now in ADT?

The current time in ADT is

What time is it now in AST?

The current time in AST is

The Atlantic Daylight Time (ADT) is +1 hours behind Atlantic Standard Time (AST).

タイムゾーン変換が必要な場面

Remote Meetings

Schedule calls with international teams across different time zones.

Travel Planning

Know the local time at your destination before you arrive.

Stock Markets

Track market opening and closing times across global exchanges.

Live Events

Never miss a live stream, sports event, or product launch.

Software Development

Coordinate deployments and standups with distributed teams.

International Calls

Call friends and family at appropriate hours across the world.

よくある質問

What is the time difference between ADT and AST?

AST is -1 hours from ADT. Atlantic Daylight Time is UTC-3 and Atlantic Standard Time is UTC-4.

What regions use ADT?

Atlantic Daylight Time (ADT) is used in: Nova Scotia, New Brunswick (Mar-Nov).

What regions use AST?

Atlantic Standard Time (AST) is used in: Puerto Rico, Nova Scotia, Caribbean.

このタイムゾーン変換ツールは無料ですか？

はい、完全無料で登録不要です。対応するすべてのタイムゾーン間で無制限に変換できます。

サマータイムに対応していますか？

固定UTCオフセットを使用しています。サマータイム調整には、適切なDSTバリアント（例：米国の夏季はESTの代わりにEDT）を選択してください。

Convert ADT to Other Time Zones

ADT to PST ADT to PDT ADT to MST ADT to MDT ADT to CST ADT to CDT ADT to EST ADT to EDT ADT to NST ADT to NDT ADT to BRT ADT to HST ADT to HDT ADT to AKST ADT to AKDT ADT to SST ADT to CHST ADT to GMT ADT to UTC ADT to BST ADT to WET ADT to WEST ADT to CET ADT to CEST ADT to MET ADT to MEST ADT to EET ADT to EEST ADT to MSK ADT to IST ADT to CAT ADT to WAT ADT to EAT ADT to SAST ADT to IST ADT to IST ADT to IDT ADT to PKT ADT to BDT ADT to ICT ADT to WIB ADT to WITA ADT to WIT ADT to SGT ADT to HKT ADT to CST ADT to CST ADT to PST ADT to JST ADT to KST ADT to AWST ADT to ACST ADT to ACDT ADT to AEST ADT to AEDT ADT to NZST ADT to NZDT

Convert AST to Other Time Zones

AST to PST AST to PDT AST to MST AST to MDT AST to CST AST to CDT AST to EST AST to EDT AST to NST AST to NDT AST to BRT AST to HST AST to HDT AST to AKST AST to AKDT AST to SST AST to CHST AST to GMT AST to UTC AST to BST AST to WET AST to WEST AST to CET AST to CEST AST to MET AST to MEST AST to EET AST to EEST AST to MSK AST to IST AST to CAT AST to WAT AST to EAT AST to SAST AST to IST AST to IST AST to IDT AST to PKT AST to BDT AST to ICT AST to WIB AST to WITA AST to WIT AST to SGT AST to HKT AST to CST AST to CST AST to PST AST to JST AST to KST AST to AWST AST to ACST AST to ACDT AST to AEST AST to AEDT AST to NZST AST to NZDT