| IDLW | -1200 | International Date Line West |
| NT | -1100 | Nome |
| HST | -1000 | Hawaii Standard |
| CAT | -1000 | Central Alaska |
| AHST | -1000 | Alaska-Hawaii Standard |
| AKST | -0900 | Alaska Standard |
| YST | -0900 | Yukon Standard |
| HDT | -0900 | Hawaii Daylight |
| AKDT | -0800 | Alaska Daylight |
| YDT | -0800 | Yukon Daylight |
| PST | -0800 | Pacific Standard |
| PDT | -0700 | Pacific Daylight |
| MST | -0700 | Mountain Standard |
| MDT | -0600 | Mountain Daylight |
| CST | -0600 | Central Standard |
| CDT | -0500 | Central Daylight |
| EST | -0500 | Eastern Standard |
| ACT | -0500 | Brazil, Acre |
| SAT | -0400 | Chile |
| BOT | -0400 | Bolivia |
| EDT | -0400 | Eastern Daylight |
| AST | -0400 | Atlantic Standard |
| AMT | -0400 | Brazil, Amazon |
| ACST | -0400 | Brazil, Acre Daylight |
| NST | -0330 | Newfoundland Standard (also: North Sumatra +0630) |
| NFT | -0330 | Newfoundland |
| GST | -0300 | Greenland Standard (also: Guam Standard +1000) |
| BST | -0300 | Brazil Standard (also: British Summer +0100) |
| BRST | -0300 | Brazil Standard |
| BRT | -0300 | Brazil Standard |
| AMST | -0300 | Brazil, Amazon Daylight |
| ADT | -0300 | Atlantic Daylight |
| ART | -0300 | Argentina |
| NDT | -0230 | Newfoundland Daylight |
| AT | -0200 | Azores |
| BRST | -0200 | Brazil Daylight (official time) |
| FNT | -0200 | Brazil, Fernando de Noronha |
| WAT | -0100 | West Africa |
| FNST | -0100 | Brazil, Fernando de Noronha Daylight |
| GMT | +0000 | Greenwich Mean |
| UT | +0000 | Universal (Coordinated) |
| UTC | +0000 | Universal (Coordinated) |
| WET | +0000 | Western European |
| CET | +0100 | Central European |
| FWT | +0100 | French Winter |
| MET | +0100 | Middle European |
| MEZ | +0100 | Middle European |
| MEWT | +0100 | Middle European Winter |
| SWT | +0100 | Swedish Winter |
| BST | +0100 | British Summer (also: Brazil standard -0300) |
| GB | +0100 | GMT with daylight savings |
| WEST | +0000 | Western European Daylight |
| CEST | +0200 | Central European Summer |
| EET | +0200 | Eastern Europe, USSR Zone 1 |
| FST | +0200 | French Summer |
| MEST | +0200 | Middle European Summer |
| MESZ | +0200 | Middle European Summer |
| METDST | +0200 | An alias for MEST used by HP-UX |
| SAST | +0200 | South African Standard |
| SST | +0200 | Swedish Summer (also: South Sumatra +0700) |
| EEST | +0300 | Eastern Europe Summer |
| BT | +0300 | Baghdad, USSR Zone 2 |
| MSK | +0300 | Moscow |
| EAT | +0300 | East Africa |
| IT | +0330 | Iran |
| ZP4 | +0400 | USSR Zone 3 |
| MSD | +0300 | Moscow Daylight |
| ZP5 | +0500 | USSR Zone 4 |
| IST | +0530 | Indian Standard |
| ZP6 | +0600 | USSR Zone 5 |
| NOVST | +0600 | Novosibirsk time zone, Russia |
| NST | +0630 | North Sumatra (also Newfoundland Std -0330) |
| SST | +0700 | South Sumatra, USSR Zone 6 (also: Swedish Summer +0200) |
| JAVT | +0700 | Java |
| CCT | +0800 | China Coast, USSR Zone 7 |
| AWST | +0800 | Australian Western Standard |
| WST | +0800 | West Australian Standard |
| PHT | +0800 | Asia Manila |
| JST | +0900 | Japan Standard, USSR Zone 8 |
| ROK | +0900 | Republic of Korea |
| ACST | +0930 | Australian Central Standard |
| CAST | +0930 | Central Australian Standard |
| AEST | +1000 | Australian Eastern Standard |
| EAST | +1000 | Eastern Australian Standard |
| GST | +1000 | Guam Standard, USSR Zone 9 (also: Greenland Std -0300) |
| ACDT | +1030 | Australian Central Daylight |
| CADT | +1030 | Central Australian Daylight |
| AEDT | +1100 | Australian Eastern Daylight |
| EADT | +1100 | Eastern Australian Daylight |
| IDLE | +1200 | International Date Line East |
| NZST | +1200 | New Zealand Standard |
| NZT | +1200 | New Zealand |
| NZDT | +1300 | New Zealand Daylight |