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D
Delta Time Zone
GMT +4
12am
3am
6am
9am
12pm
3pm
6pm
9pm
CEST
Central European Summer Time
GMT +2
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

4:00 pm16:00 D (UTC+4), Oct 3, 2026 = 2:00 pm14:00 CEST (UTC+2), Oct 3, 2026

D is 2 hours ahead of CEST.

D and CEST examples

These examples always use D (UTC+4) and CEST (UTC+2). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

D is 2 hours ahead of CEST.

How the time difference changes

For most of the year, D is 2 hours ahead of CEST. At other times of the year, D is 3 hours ahead of CET.

For most of the year, working hours of 9:00 am to 5:00 pm in D correspond to 7:00 am to 3:00 pm in CEST. At other times of the year, working hours of 9:00 am to 5:00 pm in D correspond to 6:00 am to 2:00 pm in CET.For most of the year, working hours of 09:00 to 17:00 in D correspond to 07:00 to 15:00 in CEST. At other times of the year, working hours of 09:00 to 17:00 in D correspond to 06:00 to 14:00 in CET.

Compare D time with CEST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Delta Time Zone is 2 hours ahead of Central European Summer Time.
4:00 pm16:00 in D is 2:00 pm14:00 in CEST

D to CEST call time
Best time for a conference call or a meeting is between 11am-5pm11:00-17:00 in D which corresponds to 9am-3pm09:00-15:00 in CEST

4:00 pm16:00 Delta Time Zone (D). Offset UTC +4:00 hours
2:00 pm14:00 Central European Summer Time (CEST). Offset UTC +2:00 hours

4:00 pm16:00 D / 2:00 pm14:00 CEST

DCEST
12:00am10:00pm
1:00am11:00pm
2:00am12:00am
3:00am1:00am
4:00am2:00am
5:00am3:00am
6:00am4:00am
7:00am5:00am
8:00am6:00am
9:00am7:00am
10:00am8:00am
11:00am9:00am
12:00pm10:00am
1:00pm11:00am
2:00pm12:00pm
3:00pm1:00pm
4:00pm2:00pm
5:00pm3:00pm
6:00pm4:00pm
7:00pm5:00pm
8:00pm6:00pm
9:00pm7:00pm
10:00pm8:00pm
11:00pm9:00pm
00:0022:00
01:0023:00
02:0000:00
03:0001:00
04:0002:00
05:0003:00
06:0004:00
07:0005:00
08:0006:00
09:0007:00
10:0008:00
11:0009:00
12:0010:00
13:0011:00
14:0012:00
15:0013:00
16:0014:00
17:0015:00
18:0016:00
19:0017:00
20:0018:00
21:0019:00
22:0020:00
23:0021:00

Delta Time Zone

Offset: D is 4 hours ahead Greenwich Mean Time (GMT) and is used in Military

Daylight Saving: Clocks in Delta Time Zone (D) do not change for daylight saving time, so D stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.

D representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +04 - basic short
  • +0400 - basic
  • +04:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0400 - sign character (+) followed by a four digit time providing hours (04) and minutes (00) of the offset. Indicates an offset of four hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Delta - Military abbreviation for D
  • D - short form of 'Delta'
Time zones with the GMT +4 offset:
  • KUYT - Kuybyshev Time
  • MSD - Moscow Daylight Time
  • SAMT - Samara Time
  • AMT - Armenia Time
  • AZT - Azerbaijan Time
  • D - Delta Time Zone
  • GET - Georgia Standard Time
  • GST - Gulf Standard Time
  • MUT - Mauritius Time
  • RET - Reunion Time
  • SCT - Seychelles Time

Central European Summer Time

Offset: CEST is 2 hours ahead Greenwich Mean Time (GMT) and is used in Europe

Countries using this time zone: Andorra, Albania, Austria, Bosnia & Herzegovina, Belgium, Switzerland, Czech Republic, Germany, Denmark, Spain, France, Gibraltar, Croatia, Hungary, Italy, Liechtenstein, Luxembourg, Monaco, Montenegro, North Macedonia, Malta, Netherlands, Norway, Poland, Serbia, Sweden, Slovenia, Svalbard & Jan Mayen, Slovakia, San Marino, Vatican City

Principal Cities: The largest city in the CEST time zone is Berlin in Germany, with about 3.426 million people. Other major cities in this time zone include Madrid, Rome, Paris, Hamburg.

German: MESZ - Mitteleuropäische Sommerzeit

CEST Time Zone Geo Map
CEST timezone map

Daylight Saving: Central European Summer Time (CEST) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Central European Time (CET).

Daylight saving time clock moves forward for one hourStart: Central European Summer Time (CEST) started on Sunday, March 29, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 29, 2026, 3:00 am03:00. Daylight saving starts annually on the last Sunday of March.

Daylight saving time clock moves back for one hourEnd: Central European Summer Time (CEST) ends on Sunday, October 25, 2026 at 3:00 am03:00 local time and clocks are set one hour back to Sunday, October 25, 2026, 2:00 am02:00 local standard time instead. Daylight saving ends annually on the last Sunday of October.

See upcoming clock changes worldwide.

CEST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +02 - basic short
  • +0200 - basic
  • +02:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0200 - sign character (+) followed by a four digit time providing hours (02) and minutes (00) of the offset. Indicates an offset of two hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Bravo - Military abbreviation for CEST
  • B - short form of 'Bravo'
IANA/Olson: Reflects CEST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Africa/Ceuta
  • Arctic/Longyearbyen
  • Atlantic/Jan_Mayen
  • CET
  • Europe/Amsterdam
  • Europe/Andorra
  • Europe/Belgrade
  • Europe/Berlin
  • Europe/Bratislava
  • Europe/Brussels
  • Europe/Budapest
  • Europe/Busingen
  • Europe/Copenhagen
  • Europe/Gibraltar
  • Europe/Ljubljana
  • Europe/Luxembourg
  • Europe/Madrid
  • Europe/Malta
  • Europe/Monaco
  • Europe/Oslo
  • Europe/Paris
  • Europe/Podgorica
  • Europe/Prague
  • Europe/Rome
  • Europe/San_Marino
  • Europe/Sarajevo
  • Europe/Skopje
  • Europe/Stockholm
  • Europe/Tirane
  • Europe/Vaduz
  • Europe/Vatican
  • Europe/Vienna
  • Europe/Warsaw
  • Europe/Zagreb
  • Europe/Zurich
  • MET
  • Poland
Time zones with the GMT +2 offset:
  • CEST - Central European Summer Time
  • EET - Eastern European Time
  • MESZ - Mitteleuropäische Sommerzeit
  • B - Bravo Time Zone
  • CAT - Central Africa Time
  • IST - Israel Standard Time
  • SAST - South Africa Standard Time
  • WAST - West Africa Summer Time