May is the month where the calendar stops pretending winter is a recent memory. Mother's Day anchors the second Sunday, Memorial Day closes out the last Monday, and graduation ceremonies pack the three weeks in between. It's also Mental Health Awareness Month in the US and the point in the year where 'let's do something this weekend' stops being a punchline.
Every day in May
🎖️ Armed Forces Day (Mauritania)
🎊 The last day of the Festival of Ridván (Baháʼí Faith) (this date is non-Gregorian and may change according to the March equinox, see List of observances set by the Baháʼí calendar)
📜 Constitution Memorial Day (Japan)
🎊 Anti-Bullying Day (United Nations)
👧 Children's Day (Japan, South Korea)
🎊 International No Diet Day
👨 Defender of the Fatherland Day (Kazakhstan)
✊ Emancipation Day (Columbus, Mississippi)
✊ Commemoration of the end of the German occupation of the Channel Islands related observances: Liberation Day, commemorating the end of the German occupation of the Channel Islands during World War II. (Guernsey and Jersey)
👧 Children's Day (Maldives)
🎊 National Eat What You Want Day
🎗️ International ME/CFS and Fibromyalgia Awareness Day
🎊 Abbotsbury Garland Day (Dorset, England)
🗽 Independence Day (Paraguay)
🎊 Aoi Matsuri (Kyoto)
✝️ Martyrs of Sudan (Episcopal Church (USA))
🎊 Birthday of the Raja (Perlis)
🎊 Baltic Fleet Day (Russia)
🕊️ Pontian Greek Genocide Remembrance Day (Greece)
🕊️ Day of Remembrance (Cambodia)
🎊 Afro-Colombian Day (Colombia)
🎊 Abolition Day (Martinique)
🏳️ Aromanian National Day
🎊 Aldersgate Day/Wesley Day (Methodism)
🎊 Africa Day (African Union)
🎊 National Paper Airplane Day
🎖️ Armed Forces Day (Nicaragua)
🎖️ Armed Forces Day (Croatia)
🎖️ Army Day (Argentina)
✊ Anguilla Day, commemorates the beginning of the Anguillian Revolution in 1967. (Anguilla)
🎊 Anniversary of Royal Brunei Malay Regiment (Brunei)