|
B.2. Date/Time Key Words
Table B.1, “Month Names” shows the tokens that are recognized as names of months.
Table B.1. Month Names
Month
|
Abbreviations
|
January
|
Jan
|
February
|
Feb
|
March
|
Mar
|
April
|
Apr
|
May
|
|
June
|
Jun
|
July
|
Jul
|
August
|
Aug
|
September
|
Sep, Sept
|
October
|
Oct
|
November
|
Nov
|
December
|
Dec
|
Table B.2, “Day of the Week Names” shows the tokens that are recognized as names of days of the week.
Table B.2. Day of the Week Names
Day
|
Abbreviations
|
Sunday
|
Sun
|
Monday
|
Mon
|
Tuesday
|
Tue, Tues
|
Wednesday
|
Wed, Weds
|
Thursday
|
Thu, Thur, Thurs
|
Friday
|
Fri
|
Saturday
|
Sat
|
Table B.3, “Date/Time Field Modifiers” shows the tokens that serve various modifier purposes.
Table B.3. Date/Time Field Modifiers
Identifier
|
Description
|
ABSTIME
|
Ignored
|
AM
|
Time is before 12:00
|
AT
|
Ignored
|
JULIAN, JD, J
|
Next field is Julian Day
|
ON
|
Ignored
|
PM
|
Time is on or after 12:00
|
T
|
Next field is time
|
The key word ABSTIME is ignored for historical reasons: In very old releases of PostgreSQL, invalid values of type abstime were emitted as Invalid Abstime. This is no longer the case however and this key word will likely be dropped in a future release.
Table B.4, “Time Zone Abbreviations for Input” shows the time zone abbreviations recognized by PostgreSQL in date/time input values. Note that these names are not necessarily used for date/time output [mdash ] output is driven by the official timezone abbreviation(s) associated with the currently selected timezone parameter setting. (It is likely that future releases will make some use of timezone for input as well.)
The table is organized by time zone offset from UTC, rather than alphabetically. This is intended to facilitate matching local usage with recognized abbreviations for cases where these might differ.
Table B.4. Time Zone Abbreviations for Input
Time Zone
|
Offset from UTC
|
Description
|
NZDT
|
+13:00
|
New Zealand Daylight-Saving Time
|
IDLE
|
+12:00
|
International Date Line, East
|
NZST
|
+12:00
|
New Zealand Standard Time
|
NZT
|
+12:00
|
New Zealand Time
|
AESST
|
+11:00
|
Australia Eastern Summer Standard Time
|
ACSST
|
+10:30
|
Central Australia Summer Standard Time
|
CADT
|
+10:30
|
Central Australia Daylight-Saving Time
|
SADT
|
+10:30
|
South Australian Daylight-Saving Time
|
AEST
|
+10:00
|
Australia Eastern Standard Time
|
EAST
|
+10:00
|
East Australian Standard Time
|
GST
|
+10:00
|
Guam Standard Time, Russia zone 9
|
LIGT
|
+10:00
|
Melbourne, Australia
|
SAST
|
+09:30
|
South Australia Standard Time
|
CAST
|
+09:30
|
Central Australia Standard Time
|
AWSST
|
+09:00
|
Australia Western Summer Standard Time
|
JST
|
+09:00
|
Japan Standard Time, Russia zone 8
|
KST
|
+09:00
|
Korea Standard Time
|
MHT
|
+09:00
|
Kwajalein Time
|
WDT
|
+09:00
|
West Australian Daylight-Saving Time
|
MT
|
+08:30
|
Moluccas Time
|
AWST
|
+08:00
|
Australia Western Standard Time
|
CCT
|
+08:00
|
China Coastal Time
|
WADT
|
+08:00
|
West Australian Daylight-Saving Time
|
WST
|
+08:00
|
West Australian Standard Time
|
JT
|
+07:30
|
Java Time
|
ALMST
|
+07:00
|
Almaty Summer Time
|
WAST
|
+07:00
|
West Australian Standard Time
|
CXT
|
+07:00
|
Christmas (Island) Time
|
MMT
|
+06:30
|
Myanmar Time
|
ALMT
|
+06:00
|
Almaty Time
|
MAWT
|
+06:00
|
Mawson (Antarctica) Time
|
IOT
|
+05:00
|
Indian Chagos Time
|
MVT
|
+05:00
|
Maldives Island Time
|
TFT
|
+05:00
|
Kerguelen Time
|
AFT
|
+04:30
|
Afghanistan Time
|
EAST
|
+04:00
|
Antananarivo Summer Time
|
MUT
|
+04:00
|
Mauritius Island Time
|
RET
|
+04:00
|
Reunion Island Time
|
SCT
|
+04:00
|
Mahe Island Time
|
IRT, IT
|
+03:30
|
Iran Time
|
EAT
|
+03:00
|
Antananarivo, Comoro Time
|
BT
|
+03:00
|
Baghdad Time
|
EETDST
|
+03:00
|
Eastern Europe Daylight-Saving Time
|
HMT
|
+03:00
|
Hellas Mediterranean Time (?)
|
BDST
|
+02:00
|
British Double Summer Time
|
CEST
|
+02:00
|
Central European Summer Time
|
CETDST
|
+02:00
|
Central European Daylight-Saving Time
|
EET
|
+02:00
|
Eastern European Time, Russia zone 1
|
FWT
|
+02:00
|
French Winter Time
|
IST
|
+02:00
|
Israel Standard Time
|
MEST
|
+02:00
|
Middle European Summer Time
|
METDST
|
+02:00
|
Middle Europe Daylight-Saving Time
|
SST
|
+02:00
|
Swedish Summer Time
|
BST
|
+01:00
|
British Summer Time
|
CET
|
+01:00
|
Central European Time
|
DNT
|
+01:00
|
Dansk Normal Tid
|
FST
|
+01:00
|
French Summer Time
|
MET
|
+01:00
|
Middle European Time
|
MEWT
|
+01:00
|
Middle European Winter Time
|
MEZ
|
+01:00
|
Mitteleuropäische Zeit
|
NOR
|
+01:00
|
Norway Standard Time
|
SET
|
+01:00
|
Seychelles Time
|
SWT
|
+01:00
|
Swedish Winter Time
|
WETDST
|
+01:00
|
Western European Daylight-Saving Time
|
GMT
|
00:00
|
Greenwich Mean Time
|
UT
|
00:00
|
Universal Time
|
UTC
|
00:00
|
Universal Coordinated Time
|
Z
|
00:00
|
Same as UTC
|
ZULU
|
00:00
|
Same as UTC
|
WET
|
00:00
|
Western European Time
|
WAT
|
-01:00
|
West Africa Time
|
FNST
|
-01:00
|
Fernando de Noronha Summer Time
|
FNT
|
-02:00
|
Fernando de Noronha Time
|
BRST
|
-02:00
|
Brasilia Summer Time
|
NDT
|
-02:30
|
Newfoundland Daylight-Saving Time
|
ADT
|
-03:00
|
Atlantic Daylight-Saving Time
|
AWT
|
-03:00
|
(unknown)
|
BRT
|
-03:00
|
Brasilia Time
|
NFT
|
-03:30
|
Newfoundland Standard Time
|
NST
|
-03:30
|
Newfoundland Standard Time
|
AST
|
-04:00
|
Atlantic Standard Time (Canada)
|
ACST
|
-04:00
|
Atlantic/Porto Acre Summer Time
|
EDT
|
-04:00
|
Eastern Daylight-Saving Time
|
ACT
|
-05:00
|
Atlantic/Porto Acre Standard Time
|
CDT
|
-05:00
|
Central Daylight-Saving Time
|
EST
|
-05:00
|
Eastern Standard Time
|
CST
|
-06:00
|
Central Standard Time
|
MDT
|
-06:00
|
Mountain Daylight-Saving Time
|
MST
|
-07:00
|
Mountain Standard Time
|
PDT
|
-07:00
|
Pacific Daylight-Saving Time
|
AKDT
|
-08:00
|
Alaska Daylight-Saving Time
|
PST
|
-08:00
|
Pacific Standard Time
|
YDT
|
-08:00
|
Yukon Daylight-Saving Time
|
AKST
|
-09:00
|
Alaska Standard Time
|
HDT
|
-09:00
|
Hawaii/Alaska Daylight-Saving Time
|
YST
|
-09:00
|
Yukon Standard Time
|
MART
|
-09:30
|
Marquesas Time
|
AHST
|
-10:00
|
Alaska/Hawaii Standard Time
|
HST
|
-10:00
|
Hawaii Standard Time
|
CAT
|
-10:00
|
Central Alaska Time
|
NT
|
-11:00
|
Nome Time
|
IDLW
|
-12:00
|
International Date Line, West
|
Australian Time Zones. There are three naming conflicts between Australian time zone names and time zone names commonly used in North and South America: ACST, CST, and EST. If the run-time option australian_timezones is set to true then ACST, CST, EST, and SAT are interpreted as Australian time zone names, as shown in Table B.5, “Australian Time Zone Abbreviations for Input”. If it is false (which is the default), then ACST, CST, and EST are taken as American time zone names, and SAT is interpreted as a noise word indicating Saturday.
Table B.5. Australian Time Zone Abbreviations for Input
Time Zone
|
Offset from UTC
|
Description
|
ACST
|
+09:30
|
Central Australia Standard Time
|
CST
|
+10:30
|
Australian Central Standard Time
|
EST
|
+10:00
|
Australian Eastern Standard Time
|
SAT
|
+09:30
|
South Australian Standard Time
|
Table B.6, “Time Zone Names for Setting timezone” shows the time zone names recognized by PostgreSQL as valid settings for the timezone parameter. Note that these names are conceptually as well as practically different from the names shown in Table B.4, “Time Zone Abbreviations for Input”: most of these names imply a local daylight-savings time rule, whereas the former names each represent just a fixed offset from UTC.
In many cases there are several equivalent names for the same zone. These are listed on the same line. The table is primarily sorted by the name of the principal city of the zone.
Table B.6. Time Zone Names for Setting
timezone
Time Zone
|
Africa/Abidjan
|
Africa/Accra
|
Africa/Addis_Ababa
|
Africa/Algiers
|
Africa/Asmera
|
Africa/Bamako
|
Africa/Bangui
|
Africa/Banjul
|
Africa/Bissau
|
Africa/Blantyre
|
Africa/Brazzaville
|
Africa/Bujumbura
|
Africa/Cairo Egypt
|
Africa/Casablanca
|
Africa/Ceuta
|
Africa/Conakry
|
Africa/Dakar
|
Africa/Dar_es_Salaam
|
Africa/Djibouti
|
Africa/Douala
|
Africa/El_Aaiun
|
Africa/Freetown
|
Africa/Gaborone
|
Africa/Harare
|
Africa/Johannesburg
|
Africa/Kampala
|
Africa/Khartoum
|
Africa/Kigali
|
Africa/Kinshasa
|
Africa/Lagos
|
Africa/Libreville
|
Africa/Lome
|
Africa/Luanda
|
Africa/Lubumbashi
|
Africa/Lusaka
|
Africa/Malabo
|
Africa/Maputo
|
Africa/Maseru
|
Africa/Mbabane
|
Africa/Mogadishu
|
Africa/Monrovia
|
Africa/Nairobi
|
Africa/Ndjamena
|
Africa/Niamey
|
Africa/Nouakchott
|
Africa/Ouagadougou
|
Africa/Porto-Novo
|
Africa/Sao_Tome
|
Africa/Timbuktu
|
Africa/Tripoli Libya
|
Africa/Tunis
|
Africa/Windhoek
|
America/Adak America/Atka US/Aleutian
|
America/Anchorage SystemV/YST9YDT US/Alaska
|
America/Anguilla
|
America/Antigua
|
America/Araguaina
|
America/Aruba
|
America/Asuncion
|
America/Bahia
|
America/Barbados
|
America/Belem
|
America/Belize
|
America/Boa_Vista
|
America/Bogota
|
America/Boise
|
America/Buenos_Aires
|
America/Cambridge_Bay
|
America/Campo_Grande
|
America/Cancun
|
America/Caracas
|
America/Catamarca
|
America/Cayenne
|
America/Cayman
|
America/Chicago CST6CDT SystemV/CST6CDT US/Central
|
America/Chihuahua
|
America/Cordoba America/Rosario
|
America/Costa_Rica
|
America/Cuiaba
|
America/Curacao
|
America/Danmarkshavn
|
America/Dawson
|
America/Dawson_Creek
|
America/Denver MST7MDT SystemV/MST7MDT US/Mountain America/Shiprock Navajo
|
America/Detroit US/Michigan
|
America/Dominica
|
America/Edmonton Canada/Mountain
|
America/Eirunepe
|
America/El_Salvador
|
America/Ensenada America/Tijuana Mexico/BajaNorte
|
America/Fortaleza
|
America/Glace_Bay
|
America/Godthab
|
America/Goose_Bay
|
America/Grand_Turk
|
America/Grenada
|
America/Guadeloupe
|
America/Guatemala
|
America/Guayaquil
|
America/Guyana
|
America/Halifax Canada/Atlantic SystemV/AST4ADT
|
America/Havana Cuba
|
America/Hermosillo
|
America/Indiana/Indianapolis America/Indianapolis America/Fort_Wayne EST SystemV/EST5 US/East-Indiana
|
America/Indiana/Knox America/Knox_IN US/Indiana-Starke
|
America/Indiana/Marengo
|
America/Indiana/Vevay
|
America/Inuvik
|
America/Iqaluit
|
America/Jamaica Jamaica
|
America/Jujuy
|
America/Juneau
|
America/Kentucky/Louisville America/Louisville
|
America/Kentucky/Monticello
|
America/La_Paz
|
America/Lima
|
America/Los_Angeles PST8PDT SystemV/PST8PDT US/Pacific US/Pacific-New
|
America/Maceio
|
America/Managua
|
America/Manaus Brazil/West
|
America/Martinique
|
America/Mazatlan Mexico/BajaSur
|
America/Mendoza
|
America/Menominee
|
America/Merida
|
America/Mexico_City Mexico/General
|
America/Miquelon
|
America/Monterrey
|
America/Montevideo
|
America/Montreal
|
America/Montserrat
|
America/Nassau
|
America/New_York EST5EDT SystemV/EST5EDT US/Eastern
|
America/Nipigon
|
America/Nome
|
America/Noronha Brazil/DeNoronha
|
America/North_Dakota/Center
|
America/Panama
|
America/Pangnirtung
|
America/Paramaribo
|
America/Phoenix MST SystemV/MST7 US/Arizona
|
America/Port-au-Prince
|
America/Port_of_Spain
|
America/Porto_Acre America/Rio_Branco Brazil/Acre
|
America/Porto_Velho
|
America/Puerto_Rico SystemV/AST4
|
America/Rainy_River
|
America/Rankin_Inlet
|
America/Recife
|
America/Regina Canada/East-Saskatchewan Canada/Saskatchewan SystemV/CST6
|
America/Santiago Chile/Continental
|
America/Santo_Domingo
|
America/Sao_Paulo Brazil/East
|
America/Scoresbysund
|
America/St_Johns Canada/Newfoundland
|
America/St_Kitts
|
America/St_Lucia
|
America/St_Thomas America/Virgin
|
America/St_Vincent
|
America/Swift_Current
|
America/Tegucigalpa
|
America/Thule
|
America/Thunder_Bay
|
America/Toronto Canada/Eastern
|
America/Tortola
|
America/Vancouver Canada/Pacific
|
America/Whitehorse Canada/Yukon
|
America/Winnipeg Canada/Central
|
America/Yakutat
|
America/Yellowknife
|
Antarctica/Casey
|
Antarctica/Davis
|
Antarctica/DumontDUrville
|
Antarctica/Mawson
|
Antarctica/McMurdo Antarctica/South_Pole
|
Antarctica/Palmer
|
Antarctica/Rothera
|
Antarctica/Syowa
|
Antarctica/Vostok
|
Asia/Aden
|
Asia/Almaty
|
Asia/Amman
|
Asia/Anadyr
|
Asia/Aqtau
|
Asia/Aqtobe
|
Asia/Ashgabat Asia/Ashkhabad
|
Asia/Baghdad
|
Asia/Bahrain
|
Asia/Baku
|
Asia/Bangkok
|
Asia/Beirut
|
Asia/Bishkek
|
Asia/Brunei
|
Asia/Calcutta
|
Asia/Choibalsan
|
Asia/Chongqing Asia/Chungking
|
Asia/Colombo
|
Asia/Dacca Asia/Dhaka
|
Asia/Damascus
|
Asia/Dili
|
Asia/Dubai
|
Asia/Dushanbe
|
Asia/Gaza
|
Asia/Harbin
|
Asia/Hong_Kong Hongkong
|
Asia/Hovd
|
Asia/Irkutsk
|
Asia/Jakarta
|
Asia/Jayapura
|
Asia/Jerusalem Asia/Tel_Aviv Israel
|
Asia/Kabul
|
Asia/Kamchatka
|
Asia/Karachi
|
Asia/Kashgar
|
Asia/Katmandu
|
Asia/Krasnoyarsk
|
Asia/Kuala_Lumpur
|
Asia/Kuching
|
Asia/Kuwait
|
Asia/Macao Asia/Macau
|
Asia/Magadan
|
Asia/Makassar Asia/Ujung_Pandang
|
Asia/Manila
|
Asia/Muscat
|
Asia/Nicosia Europe/Nicosia
|
Asia/Novosibirsk
|
Asia/Omsk
|
Asia/Oral
|
Asia/Phnom_Penh
|
Asia/Pontianak
|
Asia/Pyongyang
|
Asia/Qatar
|
Asia/Qyzylorda
|
Asia/Rangoon
|
Asia/Riyadh
|
Asia/Riyadh87 Mideast/Riyadh87
|
Asia/Riyadh88 Mideast/Riyadh88
|
Asia/Riyadh89 Mideast/Riyadh89
|
Asia/Saigon
|
Asia/Sakhalin
|
Asia/Samarkand
|
Asia/Seoul ROK
|
Asia/Shanghai PRC
|
Asia/Singapore Singapore
|
Asia/Taipei ROC
|
Asia/Tashkent
|
Asia/Tbilisi
|
Asia/Tehran Iran
|
Asia/Thimbu Asia/Thimphu
|
Asia/Tokyo Japan
|
Asia/Ulaanbaatar Asia/Ulan_Bator
|
Asia/Urumqi
|
Asia/Vientiane
|
Asia/Vladivostok
|
Asia/Yakutsk
|
Asia/Yekaterinburg
|
Asia/Yerevan
|
Atlantic/Azores
|
Atlantic/Bermuda
|
Atlantic/Canary
|
Atlantic/Cape_Verde
|
Atlantic/Faeroe
|
Atlantic/Madeira
|
Atlantic/Reykjavik Iceland
|
Atlantic/South_Georgia
|
Atlantic/St_Helena
|
Atlantic/Stanley
|
Australia/ACT Australia/Canberra Australia/NSW Australia/Sydney
|
Australia/Adelaide Australia/South
|
Australia/Brisbane Australia/Queensland
|
Australia/Broken_Hill Australia/Yancowinna
|
Australia/Darwin Australia/North
|
Australia/Hobart Australia/Tasmania
|
Australia/LHI Australia/Lord_Howe
|
Australia/Lindeman
|
Australia/Melbourne Australia/Victoria
|
Australia/Perth Australia/West
|
CET
|
EET
|
Etc/GMT+1
|
Etc/GMT+2
|
Etc/GMT+3
|
Etc/GMT+4
|
Etc/GMT+5
|
Etc/GMT+6
|
Etc/GMT+7
|
Etc/GMT+8
|
Etc/GMT+9
|
Etc/GMT+10
|
Etc/GMT+11
|
Etc/GMT+12
|
Etc/GMT-1
|
Etc/GMT-2
|
Etc/GMT-3
|
Etc/GMT-4
|
Etc/GMT-5
|
Etc/GMT-6
|
Etc/GMT-7
|
Etc/GMT-8
|
Etc/GMT-9
|
Etc/GMT-10
|
Etc/GMT-11
|
Etc/GMT-12
|
Etc/GMT-13
|
Etc/GMT-14
|
Europe/Amsterdam
|
Europe/Andorra
|
Europe/Athens
|
Europe/Belfast
|
Europe/Belgrade Europe/Ljubljana Europe/Sarajevo Europe/Skopje Europe/Zagreb
|
Europe/Berlin
|
Europe/Brussels
|
Europe/Bucharest
|
Europe/Budapest
|
Europe/Chisinau Europe/Tiraspol
|
Europe/Copenhagen
|
Europe/Dublin Eire
|
Europe/Gibraltar
|
Europe/Helsinki
|
Europe/Istanbul Asia/Istanbul Turkey
|
Europe/Kaliningrad
|
Europe/Kiev
|
Europe/Lisbon Portugal
|
Europe/London GB GB-Eire
|
Europe/Luxembourg
|
Europe/Madrid
|
Europe/Malta
|
Europe/Minsk
|
Europe/Monaco
|
Europe/Moscow W-SU
|
Europe/Oslo Arctic/Longyearbyen Atlantic/Jan_Mayen
|
Europe/Paris
|
Europe/Prague Europe/Bratislava
|
Europe/Riga
|
Europe/Rome Europe/San_Marino Europe/Vatican
|
Europe/Samara
|
Europe/Simferopol
|
Europe/Sofia
|
Europe/Stockholm
|
Europe/Tallinn
|
Europe/Tirane
|
Europe/Uzhgorod
|
Europe/Vaduz
|
Europe/Vienna
|
Europe/Vilnius
|
Europe/Warsaw Poland
|
Europe/Zaporozhye
|
Europe/Zurich
|
Factory
|
GMT GMT+0 GMT-0 GMT0 Greenwich Etc/GMT Etc/GMT+0 Etc/GMT-0 Etc/GMT0 Etc/Greenwich
|
Indian/Antananarivo
|
Indian/Chagos
|
Indian/Christmas
|
Indian/Cocos
|
Indian/Comoro
|
Indian/Kerguelen
|
Indian/Mahe
|
Indian/Maldives
|
Indian/Mauritius
|
Indian/Mayotte
|
Indian/Reunion
|
MET
|
Pacific/Apia
|
Pacific/Auckland NZ
|
Pacific/Chatham NZ-CHAT
|
Pacific/Easter Chile/EasterIsland
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Pacific/Efate
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Pacific/Enderbury
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Pacific/Fakaofo
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Pacific/Fiji
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Pacific/Funafuti
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Pacific/Galapagos
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Pacific/Gambier SystemV/YST9
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Pacific/Guadalcanal
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Pacific/Guam
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Pacific/Honolulu HST SystemV/HST10 US/Hawaii
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Pacific/Johnston
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Pacific/Kiritimati
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Pacific/Kosrae
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Pacific/Kwajalein Kwajalein
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Pacific/Majuro
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Pacific/Marquesas
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Pacific/Midway
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Pacific/Nauru
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Pacific/Niue
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Pacific/Norfolk
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Pacific/Noumea
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Pacific/Pago_Pago Pacific/Samoa US/Samoa
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Pacific/Palau
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Pacific/Pitcairn SystemV/PST8
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Pacific/Ponape
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Pacific/Port_Moresby
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Pacific/Rarotonga
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Pacific/Saipan
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Pacific/Tahiti
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Pacific/Tarawa
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Pacific/Tongatapu
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Pacific/Truk
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Pacific/Wake
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Pacific/Wallis
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Pacific/Yap
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UCT Etc/UCT
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UTC Universal Zulu Etc/UTC Etc/Universal Etc/Zulu
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WET
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In addition to the names listed in the table, PostgreSQL will accept time zone names of the form STDoffset or STDoffsetDST, where STD is a zone abbreviation, offset is a numeric offset in hours west from UTC, and DST is an optional daylight-savings zone abbreviation, assumed to stand for one hour ahead of the given offset. For example, if EST5EDT were not already a recognized zone name, it would be accepted and would be functionally equivalent to USA East Coast time. When a daylight-savings zone name is present, it is assumed to be used according to USA time zone rules, so this feature is of limited use outside North America. One should also be wary that this provision can lead to silently accepting bogus input, since there is no check on the reasonableness of the zone abbreviations. For example, SET TIMEZONE TO FOOBAR0 will work, leaving the system effectively using a rather peculiar abbreviation for GMT.
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