A
Alpha Time Zone
GMT +1
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Mexico
CST
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Australia
AEDT
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Compare A time with Mexico City and Sydney time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Alpha Time Zone is 7 hours ahead of CST (Central Standard Time) and 10 hours behind AEDT (Australian Eastern Daylight Time)
1:00 pm13:00 in A is 6:00 am06:00 in Mexico City, Mexico and is 11:00 pm23:00 in Sydney, Australia

A to Mexico City call time
Best time for a conference call or a meeting is between 4pm-5pm in A which corresponds to 9am-10am in Mexico City
A to Sydney call time
Best time for a conference call or a meeting is between 7:30am-8:30am in A which corresponds to 5:30pm-6:30pm in Sydney

1:00 pm13:00 Alpha Time Zone (A). Offset UTC +1:00 hour
6:00 am06:00 CST (Central Standard Time) (Mexico City, Mexico). Offset UTC -6:00 hours
11:00 pm23:00 AEDT (Australian Eastern Daylight Time) (Sydney, Australia). Offset UTC +11:00 hours

1:00 pm13:00 A / 6:00 am06:00 Mexico City, Mexico / 11:00 pm23:00 Sydney, Australia

AMexico City, MexicoSydney, Australia
12am (midnight)5pm10am
1am6pm11am
2am7pm12pm (noon)
3am8pm1pm
4am9pm2pm
5am10pm3pm
6am11pm4pm
7am12am (midnight)5pm
8am1am6pm
9am2am7pm
10am3am8pm
11am4am9pm
12pm (noon)5am10pm
1pm6am11pm
2pm7am12am (midnight)
3pm8am1am
4pm9am2am
5pm10am3am
6pm11am4am
7pm12pm (noon)5am
8pm1pm6am
9pm2pm7am
10pm3pm8am
11pm4pm9am
00:0017:0010:00
01:0018:0011:00
02:0019:0012:00
03:0020:0013:00
04:0021:0014:00
05:0022:0015:00
06:0023:0016:00
07:0000:0017:00
08:0001:0018:00
09:0002:0019:00
10:0003:0020:00
11:0004:0021:00
12:0005:0022:00
13:0006:0023:00
14:0007:0000:00
15:0008:0001:00
16:0009:0002:00
17:0010:0003:00
18:0011:0004:00
19:0012:0005:00
20:0013:0006:00
21:0014:0007:00
22:0015:0008:00
23:0016:0009:00

Alpha Time Zone

Offset: A is 1 hour ahead Greenwich Mean Time (GMT) and is used in Military

Daylight Saving: Clocks in Alpha Time Zone (A) do not change for daylight saving time, so A stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.

A representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +01 - basic short
  • +0100 - basic
  • +01:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0100 - sign character (+) followed by a four digit time providing hours (01) and minutes (00) of the offset. Indicates an offset of one hour to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Alpha - Military abbreviation for A
  • A - short form of 'Alpha'
Time zones with the GMT +1 offset:
  • BST - British Summer Time
  • CET - Central European Time
  • IST - Irish Standard Time
  • WEST - Western European Summer Time
  • A - Alpha Time Zone
  • CET - Central European Time
  • MEZ - Mitteleuropäische Zeit
  • WAT - West Africa Time
  • WST - Western Sahara Summer Time
  • BMT - Biel Mean Time

Mexico City Information

Time Zone

Abbreviation / Name
CST - Central Standard Time
UTC / GMT Offset
-6:00 hours during Central Standard Time, currently in use.

Mexico City Facts

Country
Mexico
Alternative Names
Cidade de Mexico, Cidade de México, Cidade do Mexico, Cidade do México, Cita du Messicu, Citta del Messico, Città del Messico, Cità dû Messicu, Cità dû Mèssicu, Ciudad Mexico, Ciudad de Mejico, Ciudad de Mexico, Ciudad de Méjico, Ciudad de México, Ciutat de Mexic, Ciutat de Mèxic, Lungsod ng Mexico, Lungsod ng México, MEX, Mehiko, Mekhiko, Meksikas, Meksiko, Meksiko Siti, Meksikurbo, Meksyk, Mexico, Mexico City, Mexico D.F., Mexico DF, Mexico Distrito Federal, Mexico by, Mexico-stad, Mexicopolis, Mexiko, Mexiko Hiria, Mexiko-Stadt, Mexikoborg, Mexíkóborg, México, México Distrito Federal, Nkoyo, Pole tou Mexikou, Valle de Mexico, Valle de México, mdynt mksykw, megsiko si, megsikositi, mekishikoshiti, meksiko, meksiko siti, meksikositi, mkzykw, mkzykwsyty, mo xi ge cheng, mqsyqw syty, Πόλη του Μεξικού, Мексико, Мексико Сити, Мехико, Мехіко, מקסיקו סיטי, مدينة مكسيكو, مکزیکو, مکزیکوسیتی, مېكسىكا شەھىرى, मेक्सिको सिटी, মেক্সিকো, เม็กซิโกซิตี, მეხიკო, メキシコシティ, 墨西哥城, 멕시코 시, 멕시코시티
Population
12,294,193
Currency
Peso (MXN)
Geographic Coordinates
19° 25' N Latitude / 99° 07' W Longitude
International Dialing Code
+52

Sydney Information

Time Zone

Abbreviation / Name
AEST - Australian Eastern Standard Time
AEDT - Australian Eastern Daylight Time
UTC / GMT Offset
+10:00 hours during Australian Eastern Standard Time, currently in use.
+11:00 hours during Australian Eastern Daylight Time.
Daylight Saving Time Change
+1:00 hour - DST is NOT in use
Daylight Saving Time Starts
Daylight saving time clock moves forward for one hour from 2am to 3amSunday, October 4, 2026 at 2:00 am local time. DST starts annually on the 1st Sunday of October. Clocks are turned forward 1 hour to Sunday, October 4, 2026 at 3:00 am local daylight time instead. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
Daylight saving time clock moves back for one hour from 3am to 2amSunday, April 5, 2026 at 3:00 am local time. DST ends annually on the 1st Sunday of April. Clocks are turned backward 1 hour to Sunday, April 5, 2026 at 2:00 am local standard time instead. Also called Fall Back or switch to Winter Time.

Sydney Facts

Country
Australia
Alternative Names
SYD, Sanctus Dionysius, Sedniejos, Sek-na, Sidnef, Sidnei, Sidnej, Sidneja, Sidnejo, Sidnejus, Sidney, Sidneý, Sidni, Sidnéy, Sidnėjus, Sit-ni, Sit-nì, Syd, Sydneium, Sydney, Sydney City, Sék-nà̤, Sídney, Sîdney, Sėdniejos, citni, shidoni, sidani, sideuni, sidnei, sidni, sidniy, sydny, xi ni, xue li, Σίδνεϋ, Сиднеи, Сидней, Сиднеј, Сидни, Сідней, Сідні, Սիդնեյ, סידני, سيدنى, سيدني, سڈنی, سیدنی, ܣܝܕܢܝ, सिडनी, सिड्नी, सिद्नी, সিডনি, ਸਿਡਨੀ, સીડની, சிட்னி, సిడ్నీ, ಸಿಡ್ನಿ, സിഡ്നി, සිඩ්නි, ซิดนีย์, སིད་ནེ།, ဆစ်ဒနီမြို့, სიდნეი, ሲድኒ, ស៊ីដនីយ៏, シドニー, 悉尼, 雪梨, 시드니
Population
4,627,345
Currency
Dollar (AUD)
Geographic Coordinates
33° 52' S Latitude / 151° 12' E Longitude
International Dialing Code
+61