CST to Ottawa Time Converter
EST is 1 hour ahead of CST. 9:00 AM CST = 10:00 AM EST.
EST is 1 hour ahead of CST. To convert CST to Ottawa Time, add 1 hour to the CST time: 9:00 AM CST = 10:00 AM EST.
CST (Central Time) is used in Chicago, Dallas, Houston, Minneapolis, New Orleans, Winnipeg; Mexico City and Central America use UTC−6 all year. Ottawa Time (Ottawa time) is used in Ottawa, Canada.
CST here means North American Central Standard Time, not China Standard Time.
CST to Ottawa Time time conversion table
CST to Ottawa Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| CST | Ottawa Time |
|---|---|
| 12:00 AM | 1:00 AM |
| 1:00 AM | 2:00 AM |
| 2:00 AM | 3:00 AM |
| 3:00 AM | 4:00 AM |
| 4:00 AM | 5:00 AM |
| 5:00 AM | 6:00 AM |
| 6:00 AM | 7:00 AM |
| 7:00 AM | 8:00 AM |
| CST | Ottawa Time |
|---|---|
| 8:00 AM | 9:00 AM |
| 9:00 AM | 10:00 AM |
| 10:00 AM | 11:00 AM |
| 11:00 AM | 12:00 PM |
| 12:00 PM | 1:00 PM |
| 1:00 PM | 2:00 PM |
| 2:00 PM | 3:00 PM |
| 3:00 PM | 4:00 PM |
| CST | Ottawa Time |
|---|---|
| 4:00 PM | 5:00 PM |
| 5:00 PM | 6:00 PM |
| 6:00 PM | 7:00 PM |
| 7:00 PM | 8:00 PM |
| 8:00 PM | 9:00 PM |
| 9:00 PM | 10:00 PM |
| 10:00 PM | 11:00 PM |
| 11:00 PM | 12:00 AM+1 |
Conversion table from CST to Ottawa Time for 7 Nov 2026. A tick marks hours that fall between 9 AM and 5 PM in both places. +1 means the next day in Ottawa Time, −1 the previous day.
- ✓ marks 9 AM–5 PM in both places
- Greyed times are night in the destination (10 PM–6 AM)
How to convert CST to Ottawa Time
Add 1 hour to the CST time to get Ottawa Time.
Example: 9:00 AM CST = 10:00 AM EST.
Across midnight: 11:00 PM CST = 12:00 AM EST (next day). The date changes, so always check the day as well as the hour.
Time difference between CST and Ottawa Time
The time difference between CST and Ottawa Time is 1 hour all year – EST is ahead of CST.
CST and Ottawa Time during daylight saving time
- CST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from CST (UTC−6) to CDT (UTC−5).
- Ottawa Time next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from EST (UTC−5) to EDT (UTC−4).
Best time for a meeting between CST and Ottawa Time
CST and Ottawa Time share 7 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 4:00 PM CST lands between 10:00 AM and 5:00 PM EST, inside working hours for both.
CST to Ottawa Time FAQ
What is the time difference between CST and Ottawa Time?
EST is 1 hour ahead of CST all year. 9:00 AM CST = 10:00 AM EST.
What is 9 AM CST in Ottawa Time?
9:00 AM CST is 10:00 AM EST.
What is 12 PM (noon) CST in Ottawa Time?
12:00 PM CST is 1:00 PM EST.
Is Ottawa Time ahead of or behind CST?
EST is 1 hour ahead of CST, so it is later in Ottawa Time than in CST.
Does CST change for daylight saving time?
Yes. CST next changes on 14 Mar 2027, when clocks go forward one hour from CST to CDT.
Does Ottawa Time change for daylight saving time?
Yes. Ottawa Time next changes on 14 Mar 2027, when clocks go forward one hour from EST to EDT.
What is the best time for a meeting between CST and Ottawa Time?
CST and Ottawa Time share 7 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 4:00 PM CST lands between 10:00 AM and 5:00 PM EST, inside working hours for both.
Is CT the same as CST?
CST is the winter (standard) name of Central Time (CT). From March to November the same clocks are called CDT. This converter always uses the one in force on the date you choose.
Related conversions
Convert Ottawa Time to CST
Convert CST to other time zones
Convert other time zones to Ottawa Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.