The Calendar hole will go live in approximately 8 days. Why not try and solve it ahead of time?
Hexdump 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 561st antimon2 🇯🇵 493 185 701ms 10 Sep 2022 562nd guilhem-roy 🇫🇷 489 183 10ms 5 May 2022 562nd Koshu 489 183 9ms 7 Dec 2023 564th logvp 487 184 13ms 10 Jan 2024 564th cros107 🇦🇺 487 184 9ms 15 Jul 2024 564th neihousaigaai 487 184 10ms 22 Oct 2024 564th InigoK 🇺🇸 487 184 10ms 24 Sep 2025 568th Jonatan6 🇩🇰 487 303 3ms 20 Mar 2024 569th unfinishedprogram 486 257 9ms 16 Sep 2023 570th olivermrose 🇺🇸 484 133 38ms 3 May 2022 571st fourth-bit 484 185 10ms 3 Oct 2024 572nd Macweese 484 332 85ms 1 Aug 2025 573rd MeWhenI 🇻🇦 484 368 56ms 25 Jul 2024 574th MeWhenI 🇻🇦 481 175 294ms 28 Jan 2023 575th rak1507 🇬🇧 481 186 10ms 6 Jan 2023 575th FortuiteMan 🇫🇷 481 186 11ms 22 Aug 2023 575th EnTerr 481 186 48ms 1 Sep 2024 578th junkondo-jp 476 262 11ms 31 May 2024 579th CaedenHarper 🇨🇦 475 263 9ms 16 Sep 2025 580th dokutan 471 299 147ms 7 Jul 2024 581st AlephSquirrel 466 178 716ms 21 Jan 2024 582nd nullie 464 193 14ms 8 Jun 2022 582nd Mabeloid 🇳🇴 464 193 10ms 8 Sep 2024 584th MeWhenI 🇻🇦 464 230 134ms 15 Dec 2022 585th eiburns 464 437 489ms 15 Dec 2022 585th Vaekor 464 437 432ms 3 Aug 2023 587th scpchicken 🇵🇼 461 134 324ms 1 May 2022 588th mbittner20 461 194 9ms 27 May 2023 589th AlephSquirrel 459 195 10ms 21 Jan 2023 590th cefqrn 457 196 11ms 6 Jan 2023 590th BREMAUCY 🇫🇷 457 196 9ms 16 Aug 2025 592nd eggled 455 153 3ms 24 Jun 2022 593rd janbehrens 🇩🇪 454 197 9ms 10 May 2022 593rd AGoyet 454 197 10ms 29 Jun 2022 595th Yewzir 🇧🇪 454 238 12ms 5 Apr 2024 596th max-barstow 453 142 44ms 23 Sep 2022 597th Bmrl7 452 198 16ms 3 Mar 2024 598th Argeento 🇵🇱 452 276 10ms 9 Sep 2023 599th calinous 🇷🇴 451 327 3ms 28 Feb 2023 600th shinh 450 143 41ms 25 Jun 2022 601st myleopard 450 199 10ms 25 Dec 2022 601st PyryL 🇫🇮 450 199 10ms 21 Aug 2024 601st andrewjc2000 450 199 16ms 13 Aug 2025 604th hamhub7 450 333 364ms 10 Aug 2022 605th Heathcorp 🇦🇺 445 201 11ms 12 Aug 2023 605th stefangimmillaro 445 201 10ms 9 May 2024 607th MeWhenI 🇻🇦 443 206 553ms 15 Feb 2023 608th MeWhenI 🇻🇦 442 228 136ms 3 Aug 2024 609th Natanaelel 🇸🇪 441 203 15ms 24 Nov 2023 610th iczelia 🇩🇪 441 334 3ms 14 Oct 2025 611th snoozingnewt 🇨🇦 436 245 182ms 14 Oct 2023 612th qpwoeirut 435 206 11ms 2 Nov 2025 613th MeWhenI 🇻🇦 435 228 751ms 15 Sep 2025 614th bac0id 435 345 362ms 27 Sep 2023 615th aevykt 434 340 2ms 30 Oct 2023 616th Masttest 432 207 14ms 14 Feb 2024 617th Yax42 🇫🇷 432 289 9ms 13 Nov 2025 618th martinnorling 🇸🇪 431 417 15ms 4 May 2022 619th Mabeloid 🇳🇴 430 193 566ms 17 Sep 2024 620th jared-hughes 429 150 43ms 12 Sep 2022 621st mrmena 🇦🇺 427 422 43ms 16 Apr 2024 622nd josrepo 425 478 478ms 4 May 2025 623rd knutae 🇳🇴 424 211 9ms 30 Dec 2023 623rd alemelis 424 211 13ms 11 Oct 2024 625th krcs 🇵🇱 423 199 323ms 3 May 2022 626th amollberg 🇸🇪 420 213 11ms 14 Jan 2024 626th frankgraziano 420 213 10ms 2 Mar 2025 628th jfallon1997 418 214 10ms 17 Aug 2022 628th m42km 418 214 11ms 11 Jan 2024 628th FranklinJiaChen 418 214 10ms 5 Aug 2024 631st croc54 414 216 12ms 8 Jan 2025 632nd harperse 413 204 242ms 5 May 2023 633rd m42km 411 202 611ms 3 Feb 2024 634th janbehrens 🇩🇪 411 222 826ms 10 May 2022 635th IlkkaTakala 410 392 2,807ms 28 Nov 2023 636th dillon-duncando 407 220 11ms 5 Oct 2022 637th KatieLG 🇬🇧 407 368 405ms 22 Oct 2022 638th madex 🇩🇪 405 221 11ms 9 Jul 2024 638th abhishekg999 405 221 11ms 21 Sep 2024 638th LostSyntax21 🇬🇧 405 221 16ms 2 Dec 2024 First Prev 561–640 of 818 Next Last