The Calendar hole will go live in approximately 13 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 306th randomuser1312 🇨🇭 910 74 50ms 30 Oct 2025 306th KasperKivimaeki 🇫🇮 910 74 47ms 1 Nov 2025 306th Babafaba 910 74 49ms 4 Nov 2025 324th GrayJoKing 🇦🇺 904 53 70ms 18 Sep 2023 324th chunes3 🇺🇸 904 53 64ms 18 Sep 2023 324th ovs-code 🇩🇪 904 53 69ms 18 Sep 2023 324th primo-ppcg 🇹🇭 904 53 77ms 18 Sep 2023 324th Steffan153 🇫🇮 904 53 69ms 19 Sep 2023 324th Kacarott 🇦🇺 904 53 63ms 26 Sep 2023 324th Yewzir 🇧🇪 904 53 69ms 19 Nov 2023 324th error256 904 53 68ms 20 May 2024 324th edsrzf 🇳🇿 904 53 66ms 25 Sep 2024 324th pardouin 🇫🇷 904 53 76ms 25 Sep 2024 324th Shanethegamer 🇺🇸 904 53 77ms 19 Dec 2024 324th GolfingSuccess 🇬🇷 904 53 88ms 30 Dec 2024 324th sean-niemann 🇺🇸 904 53 66ms 7 Apr 2025 324th DialFrost 🇸🇬 904 53 62ms 10 Apr 2025 324th JayXon 🇺🇸 904 53 76ms 15 Nov 2025 339th nwellnhof 🇩🇪 904 118 276ms 24 Aug 2023 339th JayXon 🇺🇸 904 118 269ms 24 Aug 2023 339th emplv 🇱🇻 904 118 270ms 25 Aug 2023 339th Steffan153 🇫🇮 904 118 319ms 25 Aug 2023 339th Lydxn 🇨🇦 904 118 280ms 28 Aug 2023 339th stefangimmillaro 904 118 278ms 31 Aug 2023 339th sean-niemann 🇺🇸 904 118 273ms 31 Aug 2023 339th Yewzir 🇧🇪 904 118 273ms 26 Oct 2023 339th Betuaredead 904 118 282ms 12 Nov 2023 339th kkoenig 904 118 268ms 28 Dec 2023 339th DialFrost 🇸🇬 904 118 275ms 5 Jun 2024 339th edsrzf 🇳🇿 904 118 281ms 27 Sep 2024 339th pardouin 🇫🇷 904 118 270ms 6 Oct 2024 339th CaedenHarper 🇨🇦 904 118 284ms 8 Jan 2025 339th emgordon154 904 118 262ms 18 Jan 2025 339th GolfingSuccess 🇬🇷 904 118 266ms 18 Feb 2025 339th targrik 904 118 267ms 29 Jun 2025 339th fuzzylojik-golf 🇺🇸 904 118 285ms 4 Aug 2025 339th KasperKivimaeki 🇫🇮 904 118 260ms 4 Oct 2025 358th DialFrost 🇸🇬 903 43 5ms 12 Aug 2024 358th Steffan153 🇫🇮 903 43 4ms 12 Aug 2024 358th sisyphus-ppcg 🇦🇺 903 43 4ms 13 Aug 2024 358th Shanethegamer 🇺🇸 903 43 4ms 16 Aug 2024 358th btnlq 903 43 4ms 21 Aug 2024 358th emgordon154 903 43 4ms 22 Aug 2024 358th ovs-code 🇩🇪 903 43 4ms 30 Sep 2024 358th lynn 903 43 4ms 21 Dec 2024 358th sean-niemann 🇺🇸 903 43 4ms 11 Jan 2025 358th edsrzf 🇳🇿 903 43 5ms 21 Jul 2025 368th Adix-null 🇱🇹 903 65 390ms 16 May 2023 368th MeWhenI 🇻🇦 903 65 363ms 26 Jul 2023 368th kkoenig 903 65 396ms 28 Dec 2023 368th Shanethegamer 🇺🇸 903 65 402ms 26 Mar 2024 368th xyangst 903 65 387ms 3 Oct 2024 368th dokutan 903 65 418ms 14 Oct 2024 368th petr-svestka 903 65 415ms 4 Nov 2024 368th voytxt 🇨🇿 903 65 422ms 4 Nov 2024 368th plcc0 903 65 343ms 4 Mar 2025 368th arcpolaris 903 65 361ms 23 Mar 2025 368th snoozingnewt 🇨🇦 903 65 378ms 12 Nov 2025 368th DialFrost 🇸🇬 903 65 362ms 3 days ago 380th Lydxn 🇨🇦 902 49 1,140ms 6 May 2023 380th stefangimmillaro 902 49 1,121ms 6 Aug 2023 380th pardouin 🇫🇷 902 49 1,124ms 10 Apr 2025 383rd Lydxn 🇨🇦 899 66 349ms 2 Aug 2023 383rd sean-niemann 🇺🇸 899 66 375ms 2 Aug 2023 383rd JayXon 🇺🇸 899 66 362ms 2 Aug 2023 383rd m-tkach 🇺🇦 899 66 357ms 2 Aug 2023 383rd Steffan153 🇫🇮 899 66 350ms 2 Aug 2023 383rd pardouin 🇫🇷 899 66 370ms 9 Oct 2024 383rd edsrzf 🇳🇿 899 66 338ms 10 Jun 2025 383rd DialFrost 🇸🇬 899 66 328ms 3 days ago 383rd snoozingnewt 🇨🇦 899 66 334ms 3 days ago 392nd Ashikpaul 🇮🇳 898 75 47ms 13 Oct 2024 392nd 823126 898 75 48ms 13 Nov 2024 392nd n3uromanc3r 898 75 48ms 28 Nov 2024 392nd Yax42 🇫🇷 898 75 49ms 5 Sep 2025 396th JayXon 🇺🇸 898 93 2ms 3 May 2023 396th jacobly0 🇺🇸 898 93 3ms 29 Aug 2023 396th adriweb 🇫🇷 898 93 2ms 9 Sep 2023 396th Waffle3z 898 93 2ms 11 Sep 2023 396th GoateSo 898 93 2ms 14 Sep 2023 First Prev 321–400 of 1,431 Next Last