දිනදසුන එසේත් නැත්නම් කැලැන්ඩරය (ඉංග්‍රීසි:  Calendar) යනු කාලය දින, මාස සහ අවුරුදු ලෙස බෙදන පද්ධතියකි. ^[1] සාමාන්‍යයෙන් දින දර්ශනයක් යනු අංක, මාස නම් සහ නිවාඩු නම් සහිත පිරික්සුම් සටහනකි. කැලැන්ඩරය යන්නෙන් සිදුවීම් හෝ පැවැත්වෙන සිදුවීම් සතිය ද අදහස් කළ හැක.

දින දසුන් හා සබැඳි මාධ්‍ය විකිමාධ්‍ය කොමන්ස් හි ඇත.

calendar , යන්න නිදහස් ශබ්දකෝෂය වන වික්ෂනරිය දී සොයා බලන්න.

• "Calendar". Encyclopedia Americana. 1920. 
• "Calendar". එන්සයික්ලොපීඩියා බ්‍රිටැනිකා (11th ed.). 1911. 
• Calendar converter, including all major civil, religious and technical calendars.

v t e කාලය සහ වේලාව
ප්‍රධාන සංකල්ප	අතීතය ඉතිහාසය deep time වර්තමානය අනාගතය futurology far future සදාකාලික arguments for Eternal return Immortality
Measurement and standards	කාලය මැනීම සහ වේලාව UTC UT TAI Unit of time Planck time තප්පර මිනිත්තු හෝරා පැය දින සුමාන මාස අවුරුදු Decade Century Millennium කල්ප Tropical year Solar year Sidereal year Measurement systems වේලා කලාප 12-hour clock 24-hour clock Daylight saving time New Earth Time Solar time Sidereal time Metric time Decimal time Hexadecimal time දිනදසුන් Gregorian Julian Hebrew Islamic Lunar Solar Hijri Mayan Intercalation Leap second Leap year
ඔරලෝසු	Horology History of timekeeping devices Main types astrarium atomic quantum marine sundial watch water-based
Chronology History	Astronomical chronology Big History Calendar era Chronicle Deep time Periodization Regnal year Timeline
Religion Mythology	Dreamtime Kāla Kalachakra Prophecy Time and fate deities Wheel of time
Philosophy of time	A-series and B-series B-theory of time Causality Duration Endurantism Eternal return Eternalism Event Perdurantism Presentism Temporal finitism Temporal parts The Unreality of Time
Human experience and use of time	Accounting period Fiscal year Mental chronometry Procrastination Punctuality Temporal database Term Time discipline Time management Time perception Specious present Time-tracking software Time-use research Time-based currency (time banking) Time value of money Time clock Timesheet
Time in	Geology Geological time age chron eon epoch era period Geochronology Geological history of Earth Physics Absolute time and space Arrow of time Chronon Coordinate time Imaginary time Planck epoch Planck time Proper time Rate Spacetime Theory of relativity Time dilation gravitational Time domain T-symmetry other subject areas Chronobiology Circadian rhythms Dating methodologies in archaeology Time geography
Related topics	Carpe diem Clock position Space System time Tempus fugit Time capsule Time complexity Time signature කාල තරණය
කාලය ද්වාරය

v t e කාලය මැනීම සහ සම්මත
Chronometry Orders of magnitude Metrology
International standards	Coordinated Universal Time offset UT ΔT DUT1 International Earth Rotation and Reference Systems Service ISO 31-1 ISO 8601 International Atomic Time 12-hour clock 24-hour clock Barycentric Coordinate Time Barycentric Dynamical Time Civil time Daylight saving time Geocentric Coordinate Time International Date Line IERS Reference Meridian Leap second Solar time Terrestrial Time Time zone 180th meridian
Obsolete standards	Ephemeris time Greenwich Mean Time Prime meridian
Time in physics	Absolute space and time Spacetime Chronon Continuous signal Coordinate time Cosmological decade Discrete time and continuous time Proper time Theory of relativity Time dilation Gravitational time dilation Time domain Time translation symmetry T-symmetry
Horology	Clock Astrarium Atomic clock Complication History of timekeeping devices Hourglass Marine chronometer Marine sandglass Radio clock Watch stopwatch Water clock Sundial Dialing scales Equation of time History of sundials Sundial markup schema
Calendar	Gregorian Hebrew Hindu Holocene Islamic (lunar Hijri) Julian Solar Hijri Astronomical Dominical letter Epact Equinox Intercalation Julian date Leap year Lunar Lunisolar Solar Solstice Tropical year Weekday determination Weekday names
Archaeology and geology	Chronological dating Geologic time scale International Commission on Stratigraphy
Astronomical chronology	Galactic year Nuclear timescale Precession Sidereal time
Other units of time	Flick Shake Jiffy Second Minute Moment Hour Day Week Fortnight Month Year Olympiad Lustrum Decade Century Saeculum Millennium
Related topics	Chronology Duration music Mental chronometry Decimal time Metric time System time Time metrology Time value of money Timekeeper