Iran
IST
AST/ADT
Atlantic Standard Time
GMT -4
ADT automatically adjusted to AST time zone, that is in use

Time Difference

IST (Iran Standard Time) is 7 hours and 30 minutes ahead of Atlantic Standard Time
5:30 pm17:30 in Shahriar, Iran is 10:00 am10:00 in AST

Shahriar to ADT call time
Best time for a conference call or a meeting is between 2:30pm-6pm in Shahriar which corresponds to 8am-11:30am in ADT

5:30 pm17:30 IST (Iran Standard Time) (Shahriar, Iran). Offset UTC +3:30 hours
10:00 am10:00 Atlantic Standard Time (AST). Offset UTC -4:00 hours

5:30 pm17:30 Shahriar, Iran / 10:00 am10:00 AST

Shahriar, Iran AST
12am (midnight) 4:30 pm
1am 5:30 pm
2am 6:30 pm
3am 7:30 pm
4am 8:30 pm
5am 9:30 pm
6am 10:30 pm
7am 11:30 pm
8am 12:30 am
9am 1:30 am
10am 2:30 am
11am 3:30 am
12pm (noon) 4:30 am
1pm 5:30 am
2pm 6:30 am
3pm 7:30 am
4pm 8:30 am
5pm 9:30 am
6pm 10:30 am
7pm 11:30 am
8pm 12:30 pm
9pm 1:30 pm
10pm 2:30 pm
11pm 3:30 pm
0:00 16:30
1:00 17:30
2:00 18:30
3:00 19:30
4:00 20:30
5:00 21:30
6:00 22:30
7:00 23:30
8:00 0:30
9:00 1:30
10:00 2:30
11:00 3:30
12:00 4:30
13:00 5:30
14:00 6:30
15:00 7:30
16:00 8:30
17:00 9:30
18:00 10:30
19:00 11:30
20:00 12:30
21:00 13:30
22:00 14:30
23:00 15:30

Shahriar Information

Time Zone

Abbreviation / Name
IST - Iran Standard Time
IRDT - Iran Daylight Time
UTC / GMT Offset
+3:30 hours during Iran Standard Time, currently in use.
+4:30 hours during Iran Daylight Time.
Daylight Saving Time Change
+1:00 hour - DST is NOT in use
Daylight Saving Time Starts
Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
Also called Fall Back or switch to Winter Time.

Shahriar Facts

Country
Iran
Alternative Names
Ali Shah `Iwaz, Ali Shāh ‘Iwaz, Shahreyar, Shahreyār, Shahriar, Shahriyar, Shahriyār, Shahrīār, Shakhrijar, `Ali Shah `Avaz, shhryar, Шахрияр, شهريار, ‘Alī Shāh ‘Avaẕ
Population
58,849
Currency
Rial (IRR)
Geographic Coordinates
35° 39' N Latitude / 51° 03' E Longitude
International Dialing Code
+98

Atlantic Daylight Time

Offset: ADT is 3 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries: It is used in following countries: Bermuda, Canada, Greenland

Principal Cities: The largest city in the ADT timezone is Halifax from Canada with population about 359,111 people. Other major cities in the area are Sydney, Dartmouth, Saint John, Moncton

French: HAA - Heure Avancée de l'Atlantique

ADT Time Zone Geo Map
ADT timezone map

Daylight Saving: Atlantic Daylight Time (ADT) is a daylight saving/summer time zone, however during winter some places adjust time for one hour back and observe Atlantic Standard Time (AST).

Daylight saving time clock moves back for one hour from 2am to 1amEnd: Atlantic Daylight Time (ADT) has ended on Sunday, November 3, 2024 at 2:00 am local time and clocks were set one hour back to Sunday, November 3, 2024, 1:00 am local standard time instead. Daylight saving ends annually the on first Sunday of November

Daylight saving time clock moves forward for one hour from 2am to 3amStart: Atlantic Daylight Time (ADT) starts on Sunday, March 9, 2025 at 2:00 am local time and clocks are set one hour forward to Sunday, March 9, 2025, 3:00 am. Daylight saving starts annually the on second Sunday of March

ADT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -03 - basic short
  • -0300 - basic
  • -03:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0300 - sign character (-) followed by a four digit time providing hours (03) and minutes (00) of the offset. Indicates three hour and zero minutes time differences to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Papa - Military abbreviation for ADT
  • P - short form of 'Papa'
IANA/Olson: Reflects ADT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Glace_Bay
  • America/Goose_Bay
  • America/Halifax
  • America/Moncton
  • America/Thule
  • Atlantic/Bermuda
  • Canada/Atlantic
Time zones with the GMT -3 offset:
  • ADT - Atlantic Daylight Time
  • PMT - Pierre & Miquelon Standard Time
  • PMST - Pierre & Miquelon Standard Time
  • WGT - West Greenland Time
  • AMST - Amazon Summer Time
  • ART - Argentina Time
  • BRT - Brasília time
  • CLST - Chile Summer Time
  • FKST - Falkland Islands Summer Time
  • GFT - French Guiana Time
  • P - Papa Time Zone
  • PYST - Paraguay Summer Time
  • SRT - Suriname Time
  • UYT - Uruguay Time