The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Hexdump 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 401st jared-hughes 729 222 2ms 25 Sep 2022 402nd stefangimmillaro 729 273 191ms 4 Jun 2025 403rd MeWhenI 🇻🇦 728 132 1,268ms 12 May 2023 404th Blendi-Goose 726 223 2ms 7 Oct 2025 405th logvp 725 184 13ms 10 Jan 2024 405th duckyluuk 🇳🇱 725 184 10ms 28 Mar 2024 405th cros107 🇦🇺 725 184 9ms 15 Jul 2024 405th neihousaigaai 725 184 10ms 22 Oct 2024 405th InigoK 🇺🇸 725 184 10ms 24 Sep 2025 410th annaproxy 725 211 353ms 6 May 2022 410th acer-xq 725 211 411ms 30 Jul 2024 412th minetoblend 724 196 4,922ms 9 Oct 2025 413th ovs-code 🇩🇪 724 206 702ms 14 Jul 2023 414th Shanethegamer 🇺🇸 721 166 577ms 16 Mar 2025 415th fourth-bit 721 185 10ms 3 Oct 2024 415th albanian-laundromat 721 185 11ms 13 days ago 417th lynn 719 277 188ms 8 May 2022 418th rak1507 🇬🇧 717 186 10ms 6 Jan 2023 418th sultan 717 186 10ms 24 Feb 2024 418th EnTerr 717 186 48ms 1 Sep 2024 421st emgordon154 717 209 136ms 15 Nov 2024 422nd maxpelic 🇺🇸 716 237 9ms 5 Jul 2022 422nd Lv0Sys 🇵🇱 716 237 10ms 11 days ago 424th 0xjac 🇨🇭 716 268 267ms 7 Jun 2025 425th JPRuskin 🇬🇧 715 147 360ms 18 May 2024 426th sultan 715 214 360ms 25 Feb 2024 427th Babafaba 713 187 11ms 29 Oct 2025 428th sean-niemann 🇺🇸 713 194 2ms 21 Apr 2023 429th YellowBunnyGit 712 211 3ms 29 Dec 2023 429th AlephSquirrel 712 211 9ms 21 Oct 2024 431st weeble 712 232 9ms 1 Jul 2025 432nd prplz 🇦🇺 709 212 3ms 2 May 2022 433rd MeWhenI 🇻🇦 709 233 7ms 16 Aug 2024 434th olivermrose 🇺🇸 706 133 38ms 3 May 2022 435th keelimeguy 🇺🇸 706 189 10ms 12 Dec 2023 436th Shanethegamer 🇺🇸 706 331 40ms 29 Jan 2025 437th roavin 705 213 2ms 7 Jun 2022 437th kallmi28 🇨🇿 705 213 2ms 13 Nov 2023 439th janbehrens 🇩🇪 705 217 382ms 17 Apr 2025 440th annaproxy 705 262 18ms 1 Sep 2023 441st strattonwhisler 704 241 9ms 7 May 2025 442nd The3gs 704 283 163ms 26 Jan 2025 443rd Macweese 704 293 406ms 3 Aug 2025 444th duckyluuk 🇳🇱 703 279 15ms 8 Nov 2025 445th BlankSpruce 702 214 2ms 29 Aug 2024 446th hellopatrick 702 333 35ms 31 Dec 2022 447th scpchicken 🇵🇼 699 134 380ms 1 May 2022 448th sean-niemann 🇺🇸 699 215 5ms 16 Oct 2024 449th nullie 699 285 207ms 19 Mar 2025 450th MeWhenI 🇻🇦 698 198 2ms 14 Nov 2022 451st revlayle 🇺🇸 698 219 354ms 20 Jun 2022 452nd two-bad 🇬🇧 698 243 10ms 25 Feb 2024 453rd tobeannouncd 698 274 151ms 21 May 2024 454th tatzyr 🇯🇵 696 135 53ms 12 Feb 2025 455th elgan65536 696 286 205ms 28 Oct 2023 456th postie77 695 220 357ms 14 Dec 2022 457th alexsave 693 245 10ms 14 Nov 2025 458th Alex-x90 🇺🇸 692 217 2ms 31 Mar 2024 459th nullie 691 193 14ms 8 Jun 2022 460th dcgjb 687 153 277ms 5 Mar 2024 461st mbittner20 687 194 9ms 27 May 2023 462nd djeedjay 🇳🇱 686 219 3ms 21 Sep 2022 463rd MiffOttah 686 223 380ms 28 Nov 2024 464th targrik 685 183 7ms 20 May 2025 465th rollershutter 685 196 200ms 23 Oct 2022 466th msbranicky 685 280 279ms 31 Aug 2023 467th AlephSquirrel 684 195 10ms 21 Jan 2023 467th SB-945 684 195 9ms 19 Apr 2024 469th Yewzir 🇧🇪 683 220 2ms 29 Dec 2023 470th typeswitch-dev 🇵🇹 682 312 3ms 23 Jul 2023 471st emgordon154 681 294 3ms 10 Jun 2025 472nd cefqrn 680 196 11ms 6 Jan 2023 472nd BREMAUCY 🇫🇷 680 196 9ms 16 Aug 2025 474th Protothor 679 250 9ms 8 Jun 2025 474th gigaprofisi 🇺🇸 679 250 9ms 10 Aug 2025 476th jupj 🇫🇮 678 283 271ms 12 Aug 2022 477th janbehrens 🇩🇪 677 197 9ms 10 May 2022 477th AGoyet 677 197 10ms 29 Jun 2022 479th Bmrl7 674 198 16ms 3 Mar 2024 480th CatsAreFluffy 674 223 3ms 25 Jan 2023 First Prev 401–480 of 822 Next Last