The Calendar hole will go live in approximately 13 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 639th LostSyntax21 🇬🇧 405 221 16ms 2 Dec 2024 639th Troon 405 221 10ms 28 Feb 2025 643rd martinnorling 🇸🇪 403 222 10ms 4 May 2022 643rd galloj 🇨🇿 403 222 11ms 28 Aug 2022 645th SirFireball3521 402 154 256ms 26 Feb 2024 646th RYNO8 400 224 11ms 16 Aug 2022 647th abba23 398 225 16ms 31 May 2022 648th za3k 396 226 10ms 16 Oct 2022 649th msbranicky 394 227 9ms 12 Jul 2023 650th ComputerKWasTaken 🇺🇸 392 876 457ms 21 Jan 2025 651st TobyBoyne 🇬🇧 389 230 10ms 1 May 2022 651st Pyroan 389 230 10ms 24 Feb 2025 653rd rucin93 🇵🇱 389 259 141ms 31 Oct 2024 654th codewrite 🇬🇧 388 231 15ms 13 Jul 2025 655th FlorianCassayre 🇫🇷 388 236 1,103ms 12 Sep 2023 656th Andriamanitra 🇫🇮 385 167 39ms 20 Jul 2022 657th rowboat1 384 233 10ms 14 Jun 2022 658th arobson13 🇨🇦 384 316 4ms 10 Apr 2023 659th te-chnical 383 234 10ms 18 Nov 2025 660th jbjd 381 235 18ms 23 Nov 2024 661st bobbysq 379 236 13ms 6 Jul 2023 661st jtaxen 379 236 11ms 12 Apr 2024 663rd IISResetMe 378 223 314ms 2 Jun 2025 664th CedricGebistorf 378 237 10ms 9 May 2022 664th inverseLorentz 🇦🇺 378 237 9ms 19 Oct 2023 666th jhpaques 🇫🇷 376 238 10ms 30 Nov 2022 667th fgrosshans 🇫🇷 375 239 10ms 14 Nov 2022 667th Terobero 375 239 9ms 3 Sep 2024 669th TheZwierzLF 🇵🇱 374 222 546ms 7 days ago 670th CaedenHarper 🇨🇦 374 401 425ms 17 Oct 2025 671st karhuthebear 373 240 10ms 11 May 2022 672nd Natanaelel 🇸🇪 372 194 34ms 2 May 2024 673rd Haksell 🇦🇶 370 174 44ms 22 Feb 2023 674th adamnielson42 🇺🇸 370 242 9ms 25 Apr 2023 674th mrmena 🇦🇺 370 242 10ms 22 Mar 2024 676th jessegyger 368 330 4ms 17 Oct 2022 677th msbranicky 366 227 577ms 17 Jan 2024 678th MeWhenI 🇻🇦 365 363 2ms 26 Aug 2023 679th Natanaelel 🇸🇪 364 140 70ms 20 Aug 2022 680th TheZwierzLF 🇵🇱 364 246 10ms 30 May 2025 681st Wildst 361 248 10ms 7 Jul 2023 682nd ravnskjaer 🇩🇰 361 562 385ms 3 days ago 683rd yuchuehw 360 249 10ms 1 Feb 2024 684th Schmitt-Very-Cool 357 569 464ms 30 Sep 2025 685th CaedenHarper 🇨🇦 354 280 918ms 3 Oct 2025 686th ComputerKWasTaken 🇺🇸 351 255 11ms 21 Jan 2025 687th twocatsinatrenchcoat 350 256 10ms 24 Nov 2022 688th adoxography 346 186 46ms 8 Aug 2022 689th Bonjour27891 🇻🇳 342 262 11ms 3 May 2022 689th lokeshllkumar 342 262 16ms 26 Sep 2025 691st juliansiebert 🇩🇪 340 248 267ms 6 Aug 2022 692nd jacklynnepenick 340 263 11ms 23 Jun 2022 693rd SniperSmiley 🇺🇸 339 264 10ms 25 Jun 2022 693rd LeeCamp 339 264 9ms 5 Jan 2023 695th Trunksistor 🇫🇷 338 265 11ms 23 May 2022 696th andymac-2 330 195 49ms 7 Jul 2024 697th Natanaelel 🇸🇪 330 222 3ms 2 May 2022 698th TaserTheFox 🇺🇸 329 256 288ms 2 Jun 2023 699th dahrens 329 272 9ms 19 Nov 2025 700th jameswmccarty 327 274 10ms 10 Jul 2024 701st gifti258 327 303 83ms 13 Sep 2023 702nd msbranicky 326 546 7ms 28 Dec 2023 703rd aksyristos 324 276 10ms 23 Jan 2023 703rd ThatAlo 324 276 13ms 12 Jun 2023 705th Mikey-Beep 🇬🇧 322 278 10ms 6 Oct 2022 706th AnnoyedArt1256 322 388 10ms 13 Aug 2022 707th Bananapants22 315 284 9ms 22 Sep 2022 708th hamilton-bonds 314 285 9ms 12 Nov 2024 709th ridingqwerty 🇺🇸 302 296 10ms 29 Feb 2024 710th FortuiteMan 🇫🇷 300 900 37ms 14 Aug 2025 711th evnu 293 392 81ms 2 Nov 2025 712th MeWhenI 🇻🇦 288 354 5ms 2 Oct 2022 713th MeWhenI 🇻🇦 279 263 2ms 19 May 2022 714th koipondx86 278 477 4ms 24 days ago 715th shibacho 🇯🇵 274 327 10ms 2 Nov 2022 716th galloj 🇨🇿 274 931 245ms 4 Jun 2024 717th aketawi 257 348 10ms 14 Feb 2023 718th dylanjones92 256 350 9ms 18 Jan 2024 719th Jacob385 236 1,142 21ms 13 Nov 2024 720th atazzam 🇺🇸 213 420 11ms 10 Sep 2022 First Prev 641–720 of 817 Next Last