Summary of DST in 2015 Worldwide
North America
| Country | Start of DST | End of DST |
| Bermuda | 2015-3-8 | 2015-11-1 |
| Canada | 2015-3-8 | 2015-11-1 |
| Cuba | 2015-3-8 | 2015-11-1 |
| Greenland | 2015-3-28 | 2015-10-24 |
| Haiti | 2015-3-8 | 2015-11-1 |
| Mexico | 2015-4-5 | 2015-10-25 |
| Saint Pierre and Miquelon | 2015-3-8 | 2015-11-1 |
| The Bahamas | 2015-3-8 | 2015-11-1 |
| Turks and Caicos Islands | 2015-3-8 | 2015-11-1 |
| United States | 2015-3-8 | 2015-11-1 |
Oceania
| Country | Start of DST | End of DST |
| Australia | 2015-10-4 | 2015-4-5 |
| Fiji | 2015-11-1 | 2015-1-18 |
| New Zealand | 2015-9-27 | 2015-4-5 |
| Samoa | 2015-9-27 | 2015-4-5 |
South America
| Country | Start of DST | End of DST |
| Brazil | 2015-10-18 | 2015-2-21 |
| Paraguay | 2015-10-4 | 2015-3-21 |
| Uruguay | - | 2015-3-8 |
Africa
| Country | Start of DST | End of DST |
| Burkina Faso | 2015-10-18 | 2015-2-21 |
| Morocco | 2015-3-29 | 2015-6-14 |
| Namibia | 2015-9-6 | 2015-4-5 |
Asia
| Country | Start of DST | End of DST |
| Azerbaijan | 2015-3-29 | 2015-10-25 |
| Cyprus | 2015-3-29 | 2015-10-25 |
| Iran | 2015-3-22 | 2015-9-21 |
| Israel | 2015-3-27 | 2015-10-25 |
| Jordan | 2015-3-27 | 2015-10-30 |
| Lebanon | 2015-3-29 | 2015-10-24 |
| Mongolia | 2015-3-28 | 2015-9-25 |
| Nagorno-Karabakh | 2015-3-29 | 2015-10-25 |
| Northern Cyprus | 2015-3-29 | 2015-10-25 |
| Philippines | 2015-3-29 | 2015-10-25 |
| State of Palestine | 2015-3-28 | 2015-10-22 |
| Syria | 2015-3-27 | 2015-10-29 |
| Turkey | 2015-3-29 | 2015-11-8 |
Europe
| Country | Start of DST | End of DST |
| Albania | 2015-3-29 | 2015-10-25 |
| Andorra | 2015-3-29 | 2015-10-25 |
| Austria | 2015-3-29 | 2015-10-25 |
| Belgium | 2015-3-29 | 2015-10-25 |
| Bosnia and Herzegovina | 2015-3-29 | 2015-10-25 |
| Bulgaria | 2015-3-29 | 2015-10-25 |
| Croatia | 2015-3-29 | 2015-10-25 |
| Czech Republic | 2015-3-29 | 2015-10-25 |
| Denmark | 2015-3-29 | 2015-10-25 |
| Estonia | 2015-3-29 | 2015-10-25 |
| Faroe Islands | 2015-3-29 | 2015-10-25 |
| Finland | 2015-3-29 | 2015-10-25 |
| France | 2015-3-29 | 2015-10-25 |
| Germany | 2015-3-29 | 2015-10-25 |
| Gibraltar | 2015-3-29 | 2015-10-25 |
| Greece | 2015-3-29 | 2015-10-25 |
| Guernsey | 2015-3-29 | 2015-10-25 |
| Hungary | 2015-3-29 | 2015-10-25 |
| Isle of Man | 2015-3-29 | 2015-10-25 |
| Italy | 2015-3-29 | 2015-10-25 |
| Jersey | 2015-3-29 | 2015-10-25 |
| Kosovo | 2015-3-29 | 2015-10-25 |
| Latvia | 2015-3-29 | 2015-10-25 |
| Liechtenstein | 2015-3-29 | 2015-10-25 |
| Lithuania | 2015-3-29 | 2015-10-25 |
| Luxembourg | 2015-3-29 | 2015-10-25 |
| Malta | 2015-3-29 | 2015-10-25 |
| Moldova | 2015-3-29 | 2015-10-25 |
| Monaco | 2015-3-29 | 2015-6-14 |
| Montenegro | 2015-3-29 | 2015-10-25 |
| Netherlands | 2015-3-29 | 2015-10-25 |
| Norway | 2015-3-29 | 2015-10-25 |
| Poland | 2015-3-29 | 2015-10-25 |
| Portugal | 2015-3-29 | 2015-10-25 |
| Republic of Ireland | 2015-3-29 | 2015-10-25 |
| Republic of Macedonia | 2015-3-29 | 2015-10-25 |
| Romania | 2015-3-29 | 2015-10-25 |
| San Marino | 2015-3-29 | 2015-10-25 |
| Serbia | 2015-3-29 | 2015-10-25 |
| Slovakia | 2015-3-29 | 2015-10-25 |
| Slovenia | 2015-3-29 | 2015-10-25 |
| Spain | 2015-3-29 | 2015-10-25 |
| Svalbard | 2015-3-29 | 2015-10-25 |
| Sweden | 2015-3-29 | 2015-10-25 |
| Switzerland | 2015-3-29 | 2015-10-25 |
| Transnistria | 2015-3-29 | 2015-10-25 |
| Ukraine | 2015-3-29 | 2015-10-25 |
| United Kingdom | 2015-3-29 | 2015-10-25 |