The Calendar hole will go live in approximately 3 hours. 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 ArkScript 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 ArkScript 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 801st Mabeloid 🇳🇴 509 131 4ms 21 Oct 2025 802nd JDiLenarda 🇫🇷 508 164 1,354ms 17 Jun 2025 803rd JOrE20 🇺🇸 507 127 101ms 27 days ago 804th Siri-chan 506 201 169ms 8 Jan 2025 805th tjwrenn 505 129 11ms 27 Jan 2025 806th frankgraziano 505 210 40ms 16 May 2025 807th madeforlosers 504 173 12ms 14 Jan 2025 808th Shanethegamer 🇺🇸 503 141 51ms 2 Jan 2025 809th alaaeelsayed 503 167 379ms 15 Jan 2025 810th balloffur 501 167 403ms 23 days ago 811th aditsu 499 109 3,282ms 30 Nov 2025 812th jtaxen 497 131 45ms 27 Jan 2025 813th Kacarott 🇦🇺 497 193 7ms 26 Apr 2025 814th jameswmccarty 493 132 11ms 7 Mar 2025 815th HumanoidCPU 490 171 63ms 17 Jan 2025 816th DanielSchmerber 488 172 395ms 9 Jan 2025 817th snoozingnewt 🇨🇦 487 177 8ms 2 Nov 2025 818th nils-imhoff 487 253 1,647ms 27 Jun 2025 819th JRaspass 🇬🇧 486 224 264ms 5 Jan 2025 820th HumanoidCPU 483 138 2ms 25 May 2025 821st Ailko 🇧🇪 482 135 29ms 17 Jan 2025 821st itljan30 482 135 11ms 26 Jan 2025 821st smilesformiles3 482 135 20ms 18 Jun 2025 824th gjoacorp 🇬🇧 481 174 438ms 4 Aug 2025 824th dokutan 481 174 64ms 13 Nov 2025 826th snoozingnewt 🇨🇦 480 192 9ms 2 Nov 2025 827th dokutan 479 139 5ms 13 Nov 2025 828th emgordon154 476 140 6ms 11 days ago 829th amazingalek 474 150 400ms 9 days ago 830th snoozingnewt 🇨🇦 473 141 4ms 2 Nov 2025 831st HumanoidCPU 472 179 347ms 2 Feb 2025 832nd snoozingnewt 🇨🇦 471 196 32ms 2 Nov 2025 833rd Pale-Vessel 471 216 190ms 23 Sep 2025 834th JunkIce 470 117 503ms 17 Jan 2025 835th snooze92 🇫🇷 469 139 11ms 5 Mar 2025 836th snoozingnewt 🇨🇦 469 253 40ms 2 Nov 2025 837th balloffur 466 143 5ms 23 days ago 838th brimstonetrader 465 140 18ms 6 Jan 2025 839th snoozingnewt 🇨🇦 465 188 27ms 2 Nov 2025 840th PyryL 🇫🇮 462 141 11ms 22 Jan 2025 841st madex 🇩🇪 459 142 18ms 4 Jan 2025 842nd snoozingnewt 🇨🇦 459 155 154ms 2 Nov 2025 843rd yoshykai 459 183 415ms 10 Apr 2025 844th HumanoidCPU 458 155 384ms 1 Feb 2025 844th dokutan 458 155 343ms 30 Mar 2025 846th HumanoidCPU 458 220 30ms 6 Nov 2025 847th snoozingnewt 🇨🇦 456 158 106ms 2 Nov 2025 848th galloj 🇨🇿 455 143 15ms 23 Jan 2025 849th snoozingnewt 🇨🇦 453 111 851ms 2 Nov 2025 850th CheeseCake628 🇳🇴 452 144 11ms 19 May 2025 851st mhgockel 450 148 4ms 21 Jun 2025 852nd TaserTheFox 🇺🇸 449 145 12ms 22 Feb 2025 853rd snoozingnewt 🇨🇦 448 187 1,048ms 2 Nov 2025 854th osNiko 🇧🇷 444 81 59ms 9 days ago 855th nullshallot 444 111 308ms 5 Jan 2025 856th emgordon154 444 124 10ms 30 Jun 2025 857th martinorav 440 148 13ms 20 Jan 2025 857th qwjhvbxi 440 148 19ms 21 Jan 2025 859th blaztoma 🇱🇹 439 107 269ms 29 Oct 2025 860th Chinay-Domitrix 🇺🇸 435 125 3,261ms 16 Apr 2025 861st iczelia 🇩🇪 435 163 5ms 21 Sep 2025 862nd ComputerKWasTaken 🇺🇸 434 150 10ms 20 Jan 2025 863rd JOrE20 🇺🇸 430 234 26ms 27 days ago 864th atazzam 🇺🇸 429 152 11ms 16 Jan 2025 865th Andrey2001 426 153 12ms 24 Nov 2025 866th Zhenyu-Bo 412 158 10ms 1 Aug 2025 867th MeWhenI 🇻🇦 409 103 868ms 15 Sep 2025 868th snoozingnewt 🇨🇦 409 241 43ms 2 Nov 2025 869th CheeseCake628 🇳🇴 408 135 487ms 18 Oct 2025 870th CaedenHarper 🇨🇦 408 235 6ms 14 Nov 2025 871st snoozingnewt 🇨🇦 408 247 26ms 2 Nov 2025 872nd vyx777 407 214 10ms 11 Jan 2025 872nd non-bin 407 214 19ms 28 Jun 2025 874th mbittner20 405 161 12ms 7 Feb 2025 875th snoozingnewt 🇨🇦 405 247 5ms 2 Nov 2025 876th HumanoidCPU 403 125 834ms 6 Nov 2025 877th KatieLG 🇬🇧 402 85 23ms 6 Jan 2025 878th KatieLG 🇬🇧 402 270 32ms 5 Jan 2025 879th dokutan 397 157 120ms 13 Nov 2025 880th KatieLG 🇬🇧 389 183 144ms 21 Nov 2025 First Prev 801–880 of 977 Next Last