Democracy Day (Nigeria)

Democracy Day (Nigeria)

Veterans Day (Sweden)

Veterans Day (Sweden)

Castleton Garland Day

Oak Apple Day (England), and its related observance:
Castleton Garland Day (Castleton)

International Day of United Nations Peacekeepers

International Day of United Nations Peacekeepers (International)

May 29 (Eastern Orthodox liturgics)

Christian feast day:
May 29 (Eastern Orthodox liturgics)

Ursula Ledóchowska

Christian feast day:
Ursula Ledóchowska

Theodosia of Constantinople

Christian feast day:
Theodosia of Constantinople (Eastern Orthodox Church)

Richard Thirkeld

Christian feast day:
Richard Thirkeld

Pope Paul VI

Christian feast day:
Pope Paul VI

Pope Alexander I of Alexandria

Christian feast day:
Pope Alexander of Alexandria (Eastern Orthodox Church)

Maximin of Trier

Christian feast day:
Maximin of Trier

Joseph Gérard

Christian feast day:
Joseph Gérard

Helena Dragaš

Christian feast day:
Hypomone (Eastern Orthodox Church)

Bona of Pisa

Christian feast day:
Bona of Pisa

Baháʼí calendar

Ascension of Bahá'u'lláh (Baháʼí Faith) (Only if Baháʼí Naw-Rúz falls on March 21 of the Gregorian calendar)