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GMT to CST Converter

Convert time between Greenwich Mean Time (GMT) and Central Time (CST/CDT).

Greenwich Mean Time

(UTC)

--:--

Sat, Sep 19

Central Time

(CDT)

--:--

Sat, Sep 19

Convert a specific time

1:00 PMSat, Sep 19, 2026 · CDT (UTC-5)CST is 5 hours behind GMT on this date.

Time Difference

Greenwich Mean Time is 5 hours ahead of Central Time right now.

  • Now until Nov 1, 2026: Greenwich Mean Time is 5 hours ahead of Central Time (UTC → CDT).
  • Nov 1, 2026 – Mar 14, 2027: Greenwich Mean Time is 6 hours ahead of Central Time (UTC → CST).
  • From Mar 14, 2027: Greenwich Mean Time is 5 hours ahead of Central Time (UTC → CDT).

Central Time is on CDT right now, not CST

CDT is UTC-5, 1 hour ahead of CST (UTC-6). Central Time returns to CST on Sunday, November 1, 2026 at 2:00 AM. Places that stay on CST all year, such as Mexico City, Guadalajara, Guatemala City, León, Mérida, Monterrey, Puebla, Querétaro, San José, Zapopan, Regina and Saskatoon, are on UTC-6 now.

Best time to call

Convenient overlapping hours on Saturday, September 19, 2026.

Suggested call times
GMT (Greenwich Mean Time)CDT (Central Time)
2:00 PM9:00 AM
3:00 PM10:00 AM
4:00 PM11:00 AM

These hours fall within 9 AM–5 PM in both places.

Convert another time zone Plan a meeting across GMT and CST

GMT to CST conversion table

For Saturday, September 19, 2026 in Greenwich Mean Time.

Hourly conversion from GMT to Central Time
UTCCDT
12:00 AM7:00 PM(previous day)
1:00 AM8:00 PM(previous day)
2:00 AM9:00 PM(previous day)
3:00 AM10:00 PM(previous day)
4:00 AM11:00 PM(previous day)
5:00 AM12:00 AM
6:00 AM1:00 AM
7:00 AM2:00 AM
8:00 AM3:00 AM
9:00 AM4:00 AM
10:00 AM5:00 AM
11:00 AM6:00 AM
12:00 PM7:00 AM
1:00 PM8:00 AM
2:00 PM9:00 AM
3:00 PM10:00 AM
4:00 PM11:00 AM
5:00 PM12:00 PM
6:00 PM1:00 PM
7:00 PM2:00 PM
8:00 PM3:00 PM
9:00 PM4:00 PM
10:00 PM5:00 PM
11:00 PM6:00 PM

About these time zones

Greenwich Mean Time (GMT)

Greenwich Mean Time (GMT) is the time at UTC+0. GMT and UTC show the same clock time; UTC is the scientific standard, while GMT is a time zone name. The United Kingdom and Ireland use GMT only in winter: in summer the UK switches to British Summer Time (BST, UTC+1) and Ireland to Irish Standard Time (IST, UTC+1).

Central Standard Time (CST)

Central Standard Time (CST) is UTC-6. Most of the central United States and Manitoba use CST only in winter and switch to Central Daylight Time (CDT, UTC-5) from the second Sunday in March to the first Sunday in November. Most of Saskatchewan, most of Mexico and much of Central America stay on CST all year.

GMT to CST FAQs

What time is it in CST when it is 9 AM GMT?

On Saturday, September 19, 2026, 9:00 AM UTC is 4:00 AM CDT in Central Time.

How many hours ahead is GMT from CST?

It depends on the time of year because of daylight saving time. Now until Nov 1, 2026: Greenwich Mean Time is 5 hours ahead of Central Time (UTC → CDT). Nov 1, 2026 – Mar 14, 2027: Greenwich Mean Time is 6 hours ahead of Central Time (UTC → CST).

Should I use CST or CDT?

Central Time is on CDT (UTC-5) on Saturday, September 19, 2026. Many people write “CST” all year, but strictly CST means Central Standard Time (always UTC-6). This converter follows the real local time in Central Time, including daylight saving time.

What is the best time for a call between GMT and CST?

On Saturday, September 19, 2026, good options are 2:00 PM UTC (9:00 AM CDT), 3:00 PM UTC (10:00 AM CDT), 4:00 PM UTC (11:00 AM CDT). These fall within normal 9 AM–5 PM working hours in both places.

Does GMT change for daylight saving time?

No. GMT stays at UTC+0 all year.

Does CST change for daylight saving time?

The region changes: Central Time switches between CST and CDT, so conversions depend on the date. CST itself always means UTC-6.

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