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Calendars by Country 2024

The World Population Review stated that most countries use the Gregorian calendar. The exception to this is Ethiopia, Nepal, Afghanistan and Iran. The Gregorian calendar is often referred to as the New Style calendar. This is a solar dating system that was proclaimed the official dating system by Pope Gregory XIII in 1582 as a reformation of the previously adopted Julian calendar.

The Difference in The Gregorian and Julian Calendars

The main difference between the accepted Gregorian and Julian calendars is that there is no leap year on the century year unless it is divisible by 400. This leads to a more precise dating system, offering superior date keeping to the Julian variety. The Julian calendar was originally introduced by Julius Caesar to the ancient Roman Republic. It remained the main calendar throughout Europe for more than 1,600 years.

Why The Gregorian Calendar Wasn’t Accepted Right Away

While the Gregorian Calendar was launched as a way to keep a more accurate solar dating system, some protestant countries did not want to adopt this calendar at first because they felt it was a Catholic intrusion based on the fact that it was a pope initiative. However, it was eventually accepted by most countries due to its close adherence to solar rotations. In modern times, the Gregorian calendar is considered the go-to date keeper.

The Gregorian Calendar Saved the Seasons

It takes just slightly more than 365 days for the Earth to make a full rotation around the sun. In fact, it actually takes 365.24219 days. This creates a problem when creating a calendar as any calendar with 365 days precisely will eventually get out of whack. Thankfully, through the years, the Gregorian variety changed the length of their yearly calendar to 365.2425, with changes made possible by alterations with the way leap year was initiated. This puts the length of the year per calendar date closer to the real solar year. Not perfect, but closer than before. It in essence, saved the seasons by making this important change. Otherwise, the months would have eventually been off kilter to the point of not being seasonally appropriate.

The Importance of Calendars

Calendars are vital tools in terms of dating significant events and establishing time periods. Without a consistent calendar that is adopted by most populations, telling time or highlighting significance dates or events can be confusing. Thankfully, our modern calendar keeps the world operating succinctly and orderly.

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Country
Calendars
AfghanistanSolar Hijri
AlbaniaGregorian
AlgeriaGregorian and Independent
American SamoaGregorian
AndorraGregorian
AngolaGregorian
AnguillaGregorian
Antigua and BarbudaGregorian
ArgentinaGregorian
ArmeniaGregorian
ArubaGregorian
AustraliaGregorian
AustriaGregorian
AzerbaijanGregorian
BahamasGregorian
BahrainGregorian
BangladeshBangla
BarbadosGregorian
BelarusGregorian
BelgiumGregorian
BelizeGregorian
BeninGregorian
BermudaGregorian
BhutanGregorian
BoliviaGregorian
Bosnia and HerzegovinaGregorian
BotswanaGregorian
BrazilGregorian
BruneiGregorian
BulgariaGregorian
Burkina FasoGregorian
BurundiGregorian
CambodiaGregorian
CameroonGregorian
CanadaGregorian
Cape VerdeGregorian
Cayman IslandsGregorian
Central African RepublicGregorian
ChadGregorian
ChileGregorian
ChinaGregorian
ColombiaGregorian
ComorosGregorian
Cook IslandsGregorian
Costa RicaGregorian
CroatiaGregorian
CubaGregorian
CuracaoGregorian
CyprusGregorian
Czech RepublicGregorian
DenmarkGregorian
DjiboutiGregorian
DominicaGregorian
Dominican RepublicGregorian
DR CongoGregorian
EcuadorGregorian
EgyptGregorian and Independent
El SalvadorGregorian
Equatorial GuineaGregorian
EritreaGregorian
EstoniaGregorian
EswatiniGregorian
EthiopiaEthiopian
Falkland IslandsGregorian
Faroe IslandsGregorian
FijiGregorian
FinlandGregorian
FranceGregorian
French GuianaGregorian
French PolynesiaGregorian
GabonGregorian
GambiaGregorian
GeorgiaGregorian
GermanyGregorian
GhanaGregorian
GibraltarGregorian
GreeceGregorian
GreenlandGregorian
GrenadaGregorian
GuadeloupeGregorian
GuamGregorian
GuatemalaGregorian
GuineaGregorian
Guinea BissauGregorian
GuyanaGregorian
HaitiGregorian
HondurasGregorian
Hong KongGregorian
HungaryGregorian
IcelandGregorian
IndiaIndian National (also called Shaka or Śaka calendar), Bengali
IndonesiaGregorian
IranSolar Hijri
IraqGregorian and Independent
IrelandGregorian
Isle of ManGregorian
IsraelGregorian and Hebrew
ItalyGregorian
Ivory CoastGregorian
JamaicaGregorian
JapanModified Gregorian and Japanese
JordanGregorian and Independent
KazakhstanGregorian
KenyaGregorian
KiribatiGregorian
KuwaitGregorian
KyrgyzstanGregorian
LaosGregorian
LatviaGregorian
LebanonGregorian
LesothoGregorian
LiberiaGregorian
LibyaGregorian and Independent
LiechtensteinGregorian
LithuaniaGregorian
LuxembourgGregorian
MacauGregorian
MadagascarGregorian
MalawiGregorian
MalaysiaGregorian
MaldivesGregorian
MaliGregorian
MaltaGregorian
Marshall IslandsGregorian
MartiniqueGregorian
MauritaniaGregorian and Independent
MauritiusGregorian
MayotteGregorian
MexicoGregorian
MicronesiaGregorian
MoldovaGregorian
MonacoGregorian
MongoliaGregorian
MontenegroGregorian
MontserratGregorian
MoroccoGregorian and Independent
MozambiqueGregorian
MyanmarGregorian and Independent
NamibiaGregorian
NauruGregorian
NepalNepal Sambat, Vikram Samvat
NetherlandsGregorian
New CaledoniaGregorian
New ZealandGregorian
NicaraguaGregorian
NigerGregorian
NigeriaGregorian
NiueGregorian
North KoreaModified Gregorian and Juche
North MacedoniaGregorian
Northern Mariana IslandsGregorian
NorwayGregorian
OmanGregorian and Independent
PakistanGregorian and Independent
PalauGregorian
PalestineGregorian
PanamaGregorian
Papua New GuineaGregorian
ParaguayGregorian
PeruGregorian
PhilippinesGregorian
PolandGregorian
PortugalGregorian
Puerto RicoGregorian
QatarGregorian and Independent
Republic of the CongoGregorian
ReunionGregorian
RomaniaGregorian
RussiaGregorian
RwandaGregorian
Saint BarthelemyGregorian
Saint Kitts and NevisGregorian
Saint LuciaGregorian
Saint MartinGregorian
Saint Pierre and MiquelonGregorian
Saint Vincent and the GrenadinesGregorian
SamoaGregorian
San MarinoGregorian
Sao Tome and PrincipeGregorian
Saudi ArabiaGregorian and Independent
SenegalGregorian
SerbiaGregorian
SeychellesGregorian
Sierra LeoneGregorian
SingaporeGregorian
Sint MaartenGregorian
SlovakiaGregorian
SloveniaGregorian
Solomon IslandsGregorian
SomaliaGregorian and Independent
South AfricaGregorian
South KoreaGregorian
South SudanGregorian
SpainGregorian
Sri LankaGregorian
SudanGregorian
SurinameGregorian
SwedenGregorian
SwitzerlandGregorian
SyriaGregorian
TaiwanMinguo
TajikistanGregorian
TanzaniaGregorian
ThailandModified Gregorian, Thai Solar, Thai Lunar
Timor LesteGregorian
TogoGregorian
TokelauGregorian
TongaGregorian
Trinidad and TobagoGregorian
TunisiaGregorian and Independent
TurkeyGregorian
TurkmenistanGregorian
Turks and Caicos IslandsGregorian
TuvaluGregorian
UgandaGregorian
UkraineGregorian
United Arab EmiratesGregorian and Independent
United KingdomGregorian
United StatesGregorian
United States Virgin IslandsGregorian
UruguayGregorian
UzbekistanGregorian
VanuatuGregorian
Vatican CityGregorian
VenezuelaGregorian
VietnamGregorian
Wallis and FutunaGregorian
Western SaharaGregorian and Independent
YemenGregorian and Independent
ZambiaGregorian
ZimbabweGregorian
showing: 231 rows

What calendar is used by most countries?

The Gregorian calendar is used by almost every country except Ethiopia, Nepal), Iran, and Afghanistan,

Frequently Asked Questions