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 320th m-tkach 🇺🇦 848 39 52ms 6 Jan 2025 320th KatieLG 🇬🇧 848 39 32ms 7 Jan 2025 320th BREMAUCY 🇫🇷 848 39 35ms 6 Aug 2025 324th JayXon 🇺🇸 848 118 5ms 11 Jan 2025 325th ovs-code 🇩🇪 847 25 56ms 5 Jan 2025 326th edsrzf 🇳🇿 847 65 8ms 25 Aug 2025 327th JayXon 🇺🇸 847 84 448ms 8 Jan 2025 328th error256 847 85 126ms 9 Jan 2025 329th bizy-coder 847 103 9ms 2 Jan 2025 329th DialFrost 🇸🇬 847 103 9ms 2 Jan 2025 329th Shanethegamer 🇺🇸 847 103 9ms 6 Jan 2025 329th dmrichwa 🇺🇸 847 103 9ms 8 Jan 2025 329th KingSkyrock 🇺🇸 847 103 9ms 10 Jan 2025 329th trinityy-7 847 103 10ms 21 Jul 2025 335th Just4FunCoder 846 77 10ms 24 Sep 2025 336th HumanoidCPU 845 44 6ms 1 Feb 2025 336th plcc0 845 44 4ms 9 Apr 2025 338th ovs-code 🇩🇪 845 84 373ms 6 Jan 2025 339th saito-ta 🇯🇵 844 115 25ms 12 Jan 2025 340th ovs-code 🇩🇪 843 79 5ms 5 Jan 2025 341st GrayJoKing 🇦🇺 843 96 28ms 23 days ago 342nd primo-ppcg 🇹🇭 843 117 42ms 27 Apr 2025 343rd JayXon 🇺🇸 842 99 1,368ms 10 Jan 2025 344th Shanethegamer 🇺🇸 840 100 2ms 5 Jan 2025 344th Waffle3z 840 100 2ms 7 Jan 2025 346th ovs-code 🇩🇪 840 106 15ms 5 Jan 2025 347th ovs-code 🇩🇪 839 60 1,017ms 5 Jan 2025 348th edsrzf 🇳🇿 839 110 17ms 9 Jul 2025 348th edsrzf 🇳🇿 839 110 14ms 17 Nov 2025 350th m-tkach 🇺🇦 838 104 10ms 7 Jan 2025 350th jared-hughes 838 104 9ms 7 Jan 2025 352nd JayXon 🇺🇸 838 147 1,675ms 15 Sep 2025 353rd JayXon 🇺🇸 837 93 98ms 8 Jan 2025 354th snyderek 🇺🇸 837 100 62ms 7 Jan 2025 355th edsrzf 🇳🇿 837 130 272ms 25 Aug 2025 356th Shanethegamer 🇺🇸 835 36 3ms 4 Jan 2025 357th MeWhenI 🇻🇦 835 77 46ms 6 Jan 2025 358th pcrav0 835 78 10ms 29 Jan 2025 358th ehulinsky 🇺🇸 835 78 10ms 29 Mar 2025 360th sean-niemann 🇺🇸 835 127 42ms 4 Jan 2025 361st ovs-code 🇩🇪 834 66 417ms 3 Jan 2025 361st AlephSquirrel 834 66 383ms 5 Jan 2025 361st CaedenHarper 🇨🇦 834 66 356ms 19 Jan 2025 361st emgordon154 834 66 372ms 14 Apr 2025 361st fuzzylojik-golf 🇺🇸 834 66 375ms 7 Jul 2025 361st duckyluuk 🇳🇱 834 66 458ms 9 Jul 2025 361st b-illy 🇬🇧 834 66 383ms 13 Jul 2025 361st CornerMercury 🇬🇧 834 66 373ms 12 Oct 2025 361st Babafaba 834 66 380ms 30 Oct 2025 370th m-tkach 🇺🇦 834 130 12ms 7 Jan 2025 371st MeWhenI 🇻🇦 833 41 19ms 5 Jan 2025 372nd saito-ta 🇯🇵 833 80 4ms 13 Jan 2025 373rd GrayJoKing 🇦🇺 832 101 2ms 14 Jul 2025 374th m-tkach 🇺🇦 832 105 26ms 9 Jan 2025 375th j2e2 🇪🇸 832 107 17ms 7 Feb 2025 376th frankgraziano 831 215 3,807ms 11 Aug 2025 377th Lv0Sys 🇵🇱 830 105 9ms 8 days ago 378th edsrzf 🇳🇿 829 89 8ms 14 Oct 2025 379th Shanethegamer 🇺🇸 829 246 1,509ms 14 Apr 2025 380th DialFrost 🇸🇬 828 43 116ms 7 Jan 2025 380th SirBogman 🇺🇸 828 43 103ms 10 Jan 2025 380th nwellnhof 🇩🇪 828 43 161ms 14 Jan 2025 380th GrayJoKing 🇦🇺 828 43 102ms 17 Nov 2025 384th DialFrost 🇸🇬 827 40 43ms 1 Jan 2025 384th jmerle 🇳🇱 827 40 49ms 7 Jan 2025 384th Andriamanitra 🇫🇮 827 40 47ms 12 Jan 2025 384th frankgraziano 827 40 38ms 12 May 2025 384th Just4FunCoder 827 40 34ms 14 Sep 2025 384th albanian-laundromat 827 40 51ms 30 Oct 2025 384th D-MOVE 🇵🇭 827 40 47ms 10 days ago 391st primo-ppcg 🇹🇭 827 216 3,966ms 13 Aug 2025 392nd iczelia 🇩🇪 826 45 4ms 21 Sep 2025 393rd MeWhenI 🇻🇦 826 98 27ms 23 days ago 394th edsrzf 🇳🇿 825 61 1,005ms 20 Jul 2025 395th error256 825 122 25ms 8 Jan 2025 396th sean-niemann 🇺🇸 824 55 73ms 31 Dec 2024 396th DialFrost 🇸🇬 824 55 69ms 1 Jan 2025 396th snoozingnewt 🇨🇦 824 55 69ms 11 Sep 2025 399th yhm138 824 79 10ms 16 Feb 2025 400th edsrzf 🇳🇿 823 66 4,798ms 2 Nov 2025 First Prev 321–400 of 971 Next Last