The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Roman to Arabic in Python 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 81st davecame 784 125 22ms 14 Sep 2023 82nd vishwathg 778 126 21ms 2 Feb 2023 83rd marcin7Cd 772 127 18ms 28 Sep 2019 83rd annaproxy 772 127 20ms 9 May 2022 83rd commandblockguy 🇺🇸 772 127 20ms 21 May 2023 86th daedals 766 128 20ms 31 May 2019 86th Indivicivet 766 128 20ms 26 Oct 2021 86th mathb0y512 766 128 22ms 11 Jan 2024 86th mathisfun271 766 128 41ms 13 Feb 2024 86th moustave 766 128 20ms 7 Apr 2025 91st Attero 🇸🇪 760 129 26ms 13 Oct 2020 91st jared-hughes 760 129 22ms 2 Oct 2021 91st ahmetdemirag 🇨🇾 760 129 23ms 4 Jul 2024 91st Lv0Sys 🇵🇱 760 129 21ms 19 days ago 95th sultan 754 130 41ms 1 Mar 2024 95th Bmrl7 754 130 22ms 7 Mar 2024 97th Jacob385 748 131 39ms 1 Mar 2024 97th Anonymousellama21 748 131 22ms 16 May 2024 99th joll05 🇸🇪 742 132 20ms 20 Aug 2020 99th albanian-laundromat 742 132 21ms 16 Sep 2025 101st tkwa 737 133 22ms 4 Dec 2018 101st fourth-bit 737 133 38ms 13 Jul 2023 103rd relet 731 134 20ms 8 Aug 2018 103rd melven 731 134 21ms 16 Oct 2025 103rd JOrE20 🇺🇸 731 134 567ms 19 Nov 2025 106th HETHAT 🇩🇿 726 135 20ms 22 Mar 2021 107th jarekwg 721 136 20ms 2 Oct 2020 107th OCNeve 721 136 18ms 18 Jun 2024 107th minhtrancccp 721 136 19ms 25 Nov 2024 107th luuumine 🇫🇷 721 136 21ms 17 Oct 2025 111th yzhs 🇩🇪 715 137 22ms 15 Mar 2020 111th suwat513 715 137 40ms 15 Sep 2022 111th neihousaigaai 715 137 20ms 6 Oct 2024 114th SnowballSH 710 138 26ms 3 Feb 2021 115th Stockoh 🇫🇷 705 139 34ms 27 Feb 2024 115th zhaohm14 705 139 19ms 10 Jun 2025 117th kevinmchung 700 140 26ms 3 Apr 2018 118th rifatx 695 141 29ms 16 Mar 2023 118th quimey 695 141 20ms 20 Jul 2023 120th Haksell 🇦🇶 690 142 20ms 13 Jun 2020 120th btjones0 690 142 22ms 16 Jul 2022 120th Fishron 690 142 18ms 19 Sep 2022 120th jatloe 690 142 18ms 6 Sep 2024 124th Brianzhengca 685 143 19ms 5 Feb 2021 124th TobyBoyne 🇬🇧 685 143 19ms 14 Apr 2022 126th celiendonze 🇨🇭 681 144 20ms 14 Apr 2023 126th Bulmenisaurus 681 144 18ms 1 Jul 2024 126th emgordon154 681 144 21ms 23 Sep 2024 129th lmolteno 676 145 29ms 3 Mar 2021 129th guilhem-roy 🇫🇷 676 145 21ms 7 Mar 2022 129th jakobkordez 🇸🇮 676 145 20ms 31 Oct 2022 129th frankgraziano 676 145 20ms 24 Apr 2025 129th TheZwierzLF 🇵🇱 676 145 19ms 21 May 2025 134th elgan65536 671 146 19ms 31 Mar 2024 134th InigoK 🇺🇸 671 146 24ms 26 Aug 2025 136th clementblaudeau 667 147 19ms 7 Jun 2021 136th StefanHabel 🇨🇦 667 147 19ms 31 Dec 2022 136th yuchuehw 667 147 21ms 3 Jan 2024 139th yokasuretsu 662 148 28ms 21 Apr 2018 139th AgathokakologicalBit 662 148 27ms 3 Aug 2019 139th TaserTheFox 🇺🇸 662 148 19ms 8 May 2023 139th adamnielson42 🇺🇸 662 148 20ms 8 Aug 2023 139th jtaxen 662 148 22ms 28 Apr 2024 139th o0BlackDragon0o 662 148 28ms 8 Sep 2024 139th Bombalech 662 148 26ms 8 Sep 2024 139th wh3n3v3r 🇨🇿 662 148 18ms 8 Nov 2024 147th sambirnbaum1 653 150 19ms 6 Sep 2019 147th MaxElf999 653 150 26ms 20 Oct 2022 147th nstearns96 🇬🇧 653 150 26ms 8 Dec 2022 147th Florian-Mt 653 150 19ms 14 Nov 2023 151st ian-h-chamberlain 🇺🇸 649 151 21ms 17 Dec 2019 151st qwjhvbxi 649 151 19ms 7 Feb 2024 153rd galloj 🇨🇿 645 152 20ms 10 Jan 2023 153rd Artemis21 🇬🇧 645 152 21ms 2 Jan 2025 155th myfatemi04 641 153 21ms 10 Jan 2018 155th jhpaques 🇫🇷 641 153 19ms 28 Jul 2022 157th RDShah 636 154 24ms 31 Jan 2020 157th dzshn 636 154 17ms 9 Jun 2021 157th bbakersmith 636 154 28ms 28 Jun 2022 157th aksyristos 636 154 21ms 8 Mar 2023 First Prev 81–160 of 334 Next Last