The Calendar hole will go live in approximately 3 days. Why not try and solve it ahead of time?
Calendar in all languages in bytes. 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 Bytes Time Submitted 78th jared-hughes 0 132 16ms 2 days ago 82nd DialFrost 🇸🇬 0 133 17ms 10 days ago 83rd GrayJoKing 🇦🇺 0 134 187ms 8 days ago 84th martindotexe 🇳🇴 0 135 18ms 3 days ago 85th NoneTheFewer 0 136 16ms 2 days ago 85th D-MOVE 🇵🇭 0 136 36ms 16 hours ago 87th croc54 0 137 16ms 7 Feb 2025 88th TheZwierzLF 🇵🇱 0 139 16ms 10 days ago 89th pardouin 🇫🇷 0 141 44ms 7 days ago 90th HumanoidCPU 0 142 486ms 9 days ago 90th ovs-code 🇩🇪 0 142 35ms 9 days ago 92nd Lv0Sys 🇵🇱 0 145 20ms 9 days ago 93rd ovs-code 🇩🇪 0 148 14ms 2 Nov 2025 93rd vhoulbreque 🇫🇷 0 148 16ms 8 hours ago 95th HumanoidCPU 0 150 17ms 9 days ago 96th Natanaelel 🇸🇪 0 157 39ms 7 days ago 97th IISResetMe 0 161 294ms 2 days ago 98th pardouin 🇫🇷 0 163 1,352ms 6 days ago 99th sean-niemann 🇺🇸 0 170 40ms 10 days ago 100th emplv 🇱🇻 0 172 12ms 7 days ago 101st lyphyser 0 173 54ms 10 Feb 2025 102nd ndren 0 175 335ms 29 hours ago 103rd voytxt 🇨🇿 0 176 11ms 6 days ago 104th rucin93 🇵🇱 0 180 11ms 4 days ago 105th targrik 0 184 9ms 5 days ago 106th lukegustafson 🇺🇸 0 185 13ms 4 days ago 107th attila8192 0 189 9ms 4 Mar 2025 108th AdrienHache 🇫🇷 0 190 397ms 27 Nov 2025 109th MeWhenI 🇻🇦 0 192 40ms 3 days ago 110th kg583 🇺🇸 0 201 43ms 6 May 2025 110th olleicua 🇺🇸 0 201 36ms 2 days ago 112th yibotongxue 0 204 15ms 20 Sep 2025 112th Yax42 🇫🇷 0 204 429ms 10 days ago 114th sean-niemann 🇺🇸 0 205 12ms 9 days ago 115th Andrey-Plotnikov 0 213 9ms 12 Jan 2025 116th snoozingnewt 🇨🇦 0 217 40ms 12 Oct 2025 117th rucin93 🇵🇱 0 223 3ms 21 hours ago 118th CaedenHarper 🇨🇦 0 224 10ms 19 hours ago 119th namelessiw 0 225 382ms 28 Oct 2025 120th targrik 0 226 9ms 9 Apr 2025 121st KasperKivimaeki 🇫🇮 0 227 3ms 3 days ago 122nd tomh1012 0 229 400ms 6 days ago 123rd madex 🇩🇪 0 230 3ms 5 days ago 123rd Protothor 0 230 11ms 3 days ago 125th kg583 🇺🇸 0 231 44ms 3 Sep 2025 126th JOrE20 🇺🇸 0 240 11ms 2 days ago 127th pardouin 🇫🇷 0 241 2,748ms 6 days ago 127th JOrE20 🇺🇸 0 241 267ms 30 hours ago 129th snyderek 🇺🇸 0 244 425ms 6 days ago 130th CLOStrophobic 🇮🇹 0 250 18ms 7 May 2025 131st kg583 🇺🇸 0 251 8ms 7 days ago 132nd AlephSquirrel 0 253 26ms 9 days ago 133rd CaedenHarper 🇨🇦 0 255 261ms 3 days ago 134th CaedenHarper 🇨🇦 0 266 883ms 21 hours ago 135th smclaughlin-cf 0 270 9ms 18 days ago 136th JRaspass 🇬🇧 0 279 3ms 18 hours ago 137th ovs-code 🇩🇪 0 280 153ms 8 days ago 138th aadenboy 🇺🇸 0 293 4ms 9 days ago 139th kmathis22 0 294 486ms 9 days ago 140th CaedenHarper 🇨🇦 0 297 440ms 20 hours ago 141st nyson 0 307 387ms 17 Jun 2025 142nd qrakhen 0 318 407ms 6 days ago 143rd CaedenHarper 🇨🇦 0 329 427ms 46 hours ago 144th jerrandolph 0 362 261ms 30 Sep 2025 145th albanian-laundromat 0 386 5ms 6 days ago 146th Jacob385 0 450 438ms 29 Jan 2025 147th nate8nate 0 483 7ms 11 May 2025 148th aksyristos 0 603 38ms 22 hours ago 149th johannes-looney-lizard 0 724 391ms 25 Apr 2025 150th snoozingnewt 🇨🇦 0 868 4ms 4 Oct 2025 151st JOrE20 🇺🇸 0 1,000 60ms 3 days ago 152nd warmCabin 0 1,320 3ms 21 hours ago First Prev 81–152 of 152