| Date | Weekday | Text | Observed | |||
|---|---|---|---|---|---|---|
| Other states | ||||||
| 12 May | Friday | Finland: Snellman Day (1806) | ||||
| 12 May | Friday | Khmer Republic: Constitution Day (1972) | ||||
| 12 May | Friday | US: National Hospital Day (1921) | ||||
| 12 May | Friday | US: Mother's Day, give her a call today | ||||
| 12 May | Friday | RELIGIOUS | Bhuddist-Burma: Buddha's Birthday | |||
| 12 May | Friday | RELIGIOUS | Roman Catholic: Commemoration of St Domitilla, martyr | |||
| 12 May | Friday | RELIGIOUS | Roman Catholic: Memorial of SS Nereus, Achilleus martyrs (optional) | |||
| 12 May | Friday | RELIGIOUS | Roman Catholic: Memorial of St Pancras, Roman martyr (optional) | |||
| 12 May | Friday | RELIGIOUS | Christian: Solemnity of the Ascension | |||
| Australia | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mother's Day | |||
| Bahamas | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mothers' Day | |||
| Bangladesh | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mothers' Day | |||
| Barbados | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mothers' Day | |||
| Belarus | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Day of the National Emblem and Flag of Belarus | |||
| Brazil | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mother's Day | |||
| Canada | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mother's Day | |||
| Cayman-islands | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mothers' Day | |||
| Colombia | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mother's Day | |||
| Cuba | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mother´s Day | |||
| Dominican-republic | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Día de la Madre | |||
| Finland | ||||||
| 12 May 2013 | Sunday | DE FACTO HOLIDAY | Mother's Day | |||
| Georgia | ||||||
| 12 May 2013 | Sunday | PUBLIC HOLIDAY | St Andrew's Day | |||
| Germany | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mother's Day | |||
| Honduras | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mother's Day | |||
| Iceland | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mothers' Day | |||
| India | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mother's Day | |||
| Jamaica | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mother's Day | |||
| Latvia | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mothers' Day | |||
| New-zealand | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mother's Day | |||
| Peru | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mother's Day | |||
| Romania | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Father's Day | |||
| Singapore | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mother's Day | |||
| South-africa | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mother's Day | |||
| Taiwan | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mother's Day | |||
| Trinidad | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mother's Day | |||
| Ukraine | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mother's Day | |||
| USA | ||||||
| 12 May 2013 | Sunday | OBSERVANCE | Mothers' Day | |||
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