11 Nissan
12-13 Tammuz
19 Kislev
1 Kislev
22 Shvat
420 (cannabis culture)
Aadi Perukku
Abaca Festival
Aberri Eguna
Access to Information Day
Act Zluky
Adae Festival
Adae Kese Festival
Advent Sunday
Afghan Independence Day
Agila Social and Economic Carnival
Agrasen Jayanti
Air Force Day (Pakistan)
Airborne March
Akita Kantō
Akwasidae Festival
Aldersgate Day
All Saints' Day
All Souls' Day
Amalaka Ekadashi
Ambedkar Jayanti
Ambubachi Mela
Amburbium