CDT to AST Time Converter
Central Daylight Time → Arabia Standard Time
CDT = UTC-5AST = UTC+3
⚠️ AST is ambiguous — on this page it means Arabia Standard Time. It also refers to:
CDT (Chicago) ↔ AST (Riyadh)
No overlap — one side will join outside working hours
CDT (Chicago)
AST (Riyadh)
Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.
Frequently Asked Questions
What is the difference between cdt and ast?
Central Daylight Time (cdt) is UTC-5 and Arabia Standard Time (ast) is UTC+3. The difference between them is 8 hours.
Where is cdt used?
Central Daylight Time (cdt) is used in USA and surrounding regions. The IANA timezone identifier is America/Chicago.
Where is ast used?
Arabia Standard Time (ast) is used in Saudi Arabia and surrounding regions. The IANA timezone identifier is Asia/Riyadh. Note: ast is ambiguous and may refer to other timezones.
How do I convert cdt to ast?
Use the interactive converter above. Drag the time slider to any cdt time and the ast equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
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