Holidays and observances
September 17
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Holidays and observances
Australian Citizenship Day
Christian
feast day
:
Albert of Vercelli
Ariadne of Phrygia
Blessed
Cecilia Eusepi
Stanislaus Papczyński
Hildegard of Bingen
[
1
]
Lambert
[
1
]
Robert Bellarmine
[
1
]
Satyrus of Milan
[
1
]
Socrates and Stephen
Zygmunt Szczęsny Feliński
[
1
]
September 17 (Eastern Orthodox liturgics)
Constitution Day and Citizenship Day
, observed on the previous Friday if it falls on a Saturday, the following Monday if on a Sunday; and the beginning of the
Constitution Week
(United States)
Heroes' Day (Angola)
[
2
]
Marathwada Liberation Day
(
Maharashtra
)
National Unity Day (Belarus)
(since 2021)
[
3
]
Operation Market Garden Anniversary
is still remembered with parachuting and dedications on this day. (Netherlands)
^
a
b
c
d
e
Martyrologium Romanum
. Vatican: Libreria Editrice Vaticana. 2004. pp.
520–
521
. Retrieved
14 September
2026
.
^
James, W. Martin (2018).
Historical Dictionary of Angola
. Rowman & Littlefield. p. 255.
ISBN
978-1-5381-1123-9
.
^
В Беларуси учрежден День народного единства
, at the official internet portal of President of Belarus
"Указ Президента Республики Беларусь No. 206"
.