The Calendar hole will go live in approximately 10 days. Why not try and solve it ahead of time?
Day of Week in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 481st michelebastione 🇮🇹 877 67 399ms 20 Dec 2023 481st gblikas 877 67 391ms 18 Aug 2024 483rd Shanethegamer 🇺🇸 877 77 1,235ms 26 Oct 2023 483rd JayXon 🇺🇸 877 77 1,314ms 27 Oct 2023 483rd JDiLenarda 🇫🇷 877 77 1,305ms 24 Nov 2023 486th Steffan153 🇫🇮 877 98 9ms 1 Jun 2024 486th IanUtley 877 98 9ms 28 Jun 2024 488th sean-niemann 🇺🇸 876 68 199ms 6 Aug 2024 488th Steffan153 🇫🇮 876 68 196ms 6 Aug 2024 488th pardouin 🇫🇷 876 68 197ms 11 Aug 2024 491st Steffan153 🇫🇮 875 54 150ms 18 Apr 2023 491st sean-niemann 🇺🇸 875 54 148ms 2 Jun 2025 493rd NickTheEASDude 🇺🇸 875 77 50ms 26 Jan 2024 493rd Moreallure 875 77 54ms 4 May 2024 493rd Protothor 875 77 49ms 3 Jul 2025 496th snoozingnewt 🇨🇦 874 50 3ms 9 days ago 497th SB-945 873 75 15ms 5 Mar 2024 497th StinkyMilo 873 75 17ms 13 May 2025 499th emplv 🇱🇻 872 50 5ms 16 Apr 2023 499th oddvalue 872 50 5ms 4 Aug 2023 499th janbehrens 🇩🇪 872 50 5ms 4 Aug 2023 499th DialFrost 🇸🇬 872 50 5ms 6 Dec 2023 499th Pimentero 🇷🇺 872 50 5ms 15 Apr 2024 504th IanUtley 872 69 15ms 23 Aug 2023 504th annaproxy 872 69 16ms 2 Sep 2023 506th JayXon 🇺🇸 872 93 610ms 30 Oct 2024 507th neel11235813 871 70 345ms 28 Mar 2024 508th Shanethegamer 🇺🇸 871 110 129ms 16 Apr 2023 508th Steffan153 🇫🇮 871 110 128ms 16 Apr 2023 508th JayXon 🇺🇸 871 110 129ms 21 Apr 2023 508th MeWhenI 🇻🇦 871 110 129ms 15 May 2023 508th Lydxn 🇨🇦 871 110 130ms 26 May 2023 508th stefangimmillaro 871 110 127ms 20 Jun 2023 508th voytxt 🇨🇿 871 110 132ms 1 Jan 2024 508th sean-niemann 🇺🇸 871 110 129ms 20 Jul 2024 508th edsrzf 🇳🇿 871 110 126ms 1 Jun 2025 508th Yax42 🇫🇷 871 110 127ms 7 Oct 2025 508th snoozingnewt 🇨🇦 871 110 133ms 9 days ago 519th madex 🇩🇪 869 98 2ms 6 Aug 2023 520th weliveinhell 🇭🇹 867 123 273ms 1 Oct 2023 520th jerrandolph 867 123 267ms 20 Oct 2023 520th r3vit 867 123 268ms 27 Dec 2023 520th ibeucaly 867 123 272ms 26 Apr 2025 520th snoozingnewt 🇨🇦 867 123 247ms 17 Oct 2025 525th Lydxn 🇨🇦 866 78 1,282ms 26 May 2023 525th Yewzir 🇧🇪 866 78 1,251ms 4 Jul 2023 525th Steffan153 🇫🇮 866 78 1,294ms 10 Aug 2024 525th edsrzf 🇳🇿 866 78 1,321ms 15 Nov 2024 529th edsrzf 🇳🇿 865 84 126ms 24 May 2025 529th JayXon 🇺🇸 865 84 168ms 24 May 2025 531st 2bular 865 95 3ms 3 Aug 2025 532nd JayXon 🇺🇸 865 222 210ms 5 days ago 533rd ccolella-mdc 864 68 415ms 12 Oct 2023 534th cryosis7 864 78 48ms 23 Aug 2023 534th jbt 864 78 49ms 26 Dec 2023 534th rastapasta 864 78 49ms 7 Aug 2024 537th JayXon 🇺🇸 863 142 509ms 14 Jul 2023 537th Shanethegamer 🇺🇸 863 142 517ms 14 Jul 2023 537th Lydxn 🇨🇦 863 142 480ms 14 Jul 2023 537th sean-niemann 🇺🇸 863 142 487ms 20 Jul 2024 537th Steffan153 🇫🇮 863 142 477ms 20 Jul 2024 542nd brochmann 🇸🇪 862 76 21ms 13 Aug 2023 542nd bwenstar 862 76 21ms 21 Feb 2024 542nd sultan 862 76 21ms 26 Feb 2024 542nd KatieLG 🇬🇧 862 76 24ms 29 Jul 2024 542nd xyangst 862 76 13ms 3 Oct 2024 542nd wh3n3v3r 🇨🇿 862 76 22ms 20 Nov 2024 542nd JunkIce 862 76 25ms 24 Nov 2024 549th 2bular 862 81 41ms 18 Oct 2025 550th primo-ppcg 🇹🇭 862 94 3,593ms 21 Apr 2023 550th saito-ta 🇯🇵 862 94 567ms 24 Apr 2023 552nd GrayJoKing 🇦🇺 860 55 143ms 18 Apr 2023 553rd stefangimmillaro 860 69 383ms 13 Oct 2024 554th HumanEquivalentUnit 860 70 15ms 28 Nov 2023 555th jacobly0 🇺🇸 860 99 2ms 2 Oct 2023 555th kkoenig 860 99 2ms 28 Dec 2023 557th albanian-laundromat 859 71 399ms 4 Aug 2025 558th kaascevich 859 145 642ms 22 Jul 2025 558th JayXon 🇺🇸 859 145 702ms 23 Jul 2025 560th Steffan153 🇫🇮 858 131 7ms 20 Aug 2023 First Prev 481–560 of 1,433 Next Last