The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
ROT13 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 voytxt 🇨🇿 823 106 9ms 4 Jan 2025 401st targrik 823 106 9ms 4 Apr 2025 403rd kg583 🇺🇸 823 145 42ms 20 Jul 2025 403rd edsrzf 🇳🇿 823 145 47ms 20 Jul 2025 405th m-tkach 🇺🇦 822 81 2ms 7 Jan 2025 405th rhdqor213 822 81 2ms 9 days ago 407th retrohun 822 118 197ms 26 Jan 2025 408th DialFrost 🇸🇬 821 67 383ms 1 Jan 2025 408th sean-niemann 🇺🇸 821 67 377ms 2 Jul 2025 408th m-tkach 🇺🇦 821 67 395ms 23 Jul 2025 408th FEZfan 🇦🇺 821 67 442ms 1 Nov 2025 412th m-tkach 🇺🇦 821 102 492ms 7 Jan 2025 413th zacjl 821 105 14ms 8 Jan 2025 414th DialFrost 🇸🇬 818 87 389ms 1 Jan 2025 414th edsrzf 🇳🇿 818 87 425ms 2 Nov 2025 416th GolfingSuccess 🇬🇷 817 99 27ms 9 Feb 2025 417th IanUtley 817 109 19ms 6 Jan 2025 418th ovs-code 🇩🇪 816 79 127ms 17 Apr 2025 419th error256 816 250 444ms 27 Jul 2025 420th stefangimmillaro 815 87 394ms 14 Jan 2025 420th SirBogman 🇺🇸 815 87 358ms 23 Jan 2025 420th tomtheisen 🇺🇸 815 87 367ms 15 Feb 2025 420th namelessiw 815 87 388ms 24 Jul 2025 424th saito-ta 🇯🇵 814 26 83ms 12 Jan 2025 425th GolfingSuccess 🇬🇷 812 26 6ms 20 Mar 2025 426th stefangimmillaro 812 62 1,044ms 4 Jan 2025 427th Natanaelel 🇸🇪 809 44 158ms 13 Jan 2025 428th Shanethegamer 🇺🇸 809 68 335ms 2 Jan 2025 428th dokutan 809 68 440ms 6 Jan 2025 428th HumanoidCPU 809 68 411ms 7 Jan 2025 428th SirBogman 🇺🇸 809 68 417ms 15 Jan 2025 428th albanian-laundromat 809 68 451ms 4 Aug 2025 428th TheZwierzLF 🇵🇱 809 68 450ms 26 days ago 428th Yewzir 🇧🇪 809 68 367ms 17 days ago 435th emgordon154 809 252 528ms 15 Apr 2025 436th frankgraziano 808 120 3,296ms 23 Aug 2025 437th aksyristos 807 41 50ms 7 Jan 2025 437th CornerMercury 🇬🇧 807 41 48ms 17 Jan 2025 437th HumanoidCPU 807 41 40ms 1 Feb 2025 437th dokutan 807 41 50ms 4 Feb 2025 437th CaedenHarper 🇨🇦 807 41 44ms 7 Sep 2025 437th prestosilver 🇺🇸 807 41 33ms 18 Nov 2025 443rd SirBogman 🇺🇸 807 61 301ms 9 Jan 2025 444th Maznek 807 108 9ms 9 Jan 2025 445th stefangimmillaro 807 126 161ms 14 Jan 2025 445th edsrzf 🇳🇿 807 126 148ms 25 Aug 2025 447th stefangimmillaro 806 135 269ms 2 Jan 2025 447th GolfingSuccess 🇬🇷 806 135 273ms 2 Jan 2025 449th kg583 🇺🇸 805 107 25ms 19 days ago 450th JohandeRuiter 🇳🇱 803 83 4ms 21 Jan 2025 450th error256 803 83 5ms 25 Aug 2025 452nd CLOStrophobic 🇮🇹 802 115 15ms 19 Jan 2025 453rd adriweb 🇫🇷 800 105 2ms 8 Jan 2025 453rd FlyingPenguin223 800 105 2ms 7 Mar 2025 453rd stefangimmillaro 800 105 462ms 7 Oct 2025 456th Andrey-Plotnikov 800 109 9ms 16 Jan 2025 456th acollett89 800 109 9ms 4 Aug 2025 456th snoozingnewt 🇨🇦 800 109 9ms 4 Nov 2025 456th olleicua 🇺🇸 800 109 9ms 9 Nov 2025 460th sean-niemann 🇺🇸 800 136 268ms 3 Jan 2025 461st tatzyr 🇯🇵 799 63 1,083ms 29 Jul 2025 462nd kaascevich 799 114 101ms 29 Jul 2025 463rd CatsAreFluffy 798 45 50ms 8 Jan 2025 464th MeWhenI 🇻🇦 798 69 429ms 3 Jan 2025 464th roguh 🇬🇹 798 69 362ms 18 Jul 2025 464th snoozingnewt 🇨🇦 798 69 387ms 15 Oct 2025 467th Shanethegamer 🇺🇸 797 59 320ms 6 Jan 2025 468th xsot 🇸🇬 797 89 3ms 11 Jan 2025 468th kg583 🇺🇸 797 89 7ms 19 days ago 470th inventshah 797 105 475ms 26 Mar 2025 470th Mukundan314 797 105 497ms 28 Apr 2025 472nd AlephSquirrel 795 116 16ms 5 Jan 2025 472nd kg583 🇺🇸 795 116 16ms 5 Jan 2025 474th edsrzf 🇳🇿 795 126 4ms 26 Aug 2025 475th DialFrost 🇸🇬 794 62 255ms 4 Jan 2025 475th bitsandbeyond 🇳🇱 794 62 231ms 3 Nov 2025 477th frankgraziano 794 82 10ms 9 Jul 2025 478th jared-hughes 794 185 18ms 6 Apr 2025 479th GolfingSuccess 🇬🇷 793 84 2ms 3 Jan 2025 480th DialFrost 🇸🇬 793 106 2ms 2 Jan 2025 First Prev 401–480 of 970 Next Last