The Calendar hole will go live in approximately 37 hours. Why not try and solve it ahead of time?
Diamonds in Python 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 240th SimonPeatman 483 116 9ms 2 Feb 2019 240th bob-th 483 116 10ms 26 Aug 2022 240th NerdyMcNerd42 483 116 9ms 4 Feb 2023 240th randolchance 483 116 9ms 5 Feb 2023 240th Mathrew2012 483 116 9ms 9 Nov 2024 240th Emutis 🇱🇹 483 116 10ms 19 Sep 2025 247th ian-h-chamberlain 🇺🇸 479 117 10ms 29 Dec 2019 247th 77Tigers 479 117 10ms 28 Feb 2021 247th georgehulme 479 117 10ms 7 Oct 2022 247th yuchuehw 479 117 11ms 10 Jan 2024 247th adamnielson42 🇺🇸 479 117 15ms 30 Jan 2025 252nd JVerwolf 475 118 9ms 24 Aug 2021 252nd PaulMWeiser 475 118 9ms 28 Feb 2023 252nd PickausernamePi 475 118 9ms 28 Sep 2023 252nd robin-scragg 475 118 10ms 3 Oct 2025 256th zdzc 471 119 9ms 25 Apr 2019 256th lukasthaler 471 119 10ms 11 Sep 2020 256th cefqrn 471 119 9ms 20 Dec 2022 256th Jacob385 471 119 10ms 9 Apr 2024 256th sjrct 471 119 10ms 5 Aug 2024 256th Andrey2001 471 119 10ms 25 Nov 2025 262nd ludwig-n 467 120 10ms 4 Apr 2020 262nd andre-lameirinhas 🇵🇹 467 120 16ms 4 Nov 2020 262nd Bobini1 🇵🇱 467 120 10ms 10 Feb 2022 262nd zwxzwxzwx21 467 120 9ms 30 Jan 2024 262nd julian-hoelz 467 120 10ms 21 Sep 2024 262nd sciencedjinn 467 120 9ms 8 Nov 2024 262nd RaBa21 🇭🇺 467 120 10ms 19 Jul 2025 269th dymowski 463 121 10ms 10 Sep 2019 269th matty3 463 121 10ms 26 Aug 2021 269th LeeCamp 463 121 9ms 20 Dec 2021 269th OppositeShark 463 121 9ms 19 Jul 2022 269th Wildst 463 121 10ms 2 Nov 2022 269th jacksonhenry3 463 121 9ms 2 Dec 2022 269th Vaekor 463 121 9ms 27 Feb 2024 269th aaa123git 463 121 9ms 17 Jul 2024 277th TheAristos 459 122 10ms 21 Oct 2019 277th danielwang5 459 122 14ms 1 Aug 2020 277th mateusz-sterczewski 459 122 10ms 7 Nov 2024 277th qwertzguy 🇫🇷 459 122 10ms 25 Mar 2025 277th Code-Coder-coder 459 122 10ms 11 Oct 2025 277th lelbal 459 122 10ms 17 days ago 283rd Malin001 455 123 10ms 4 Jan 2020 283rd argusdusty 🇺🇸 455 123 14ms 31 Dec 2020 283rd myleopard 455 123 9ms 13 Oct 2021 283rd nullie 455 123 10ms 7 Jun 2022 283rd RandGuy 455 123 9ms 22 Nov 2022 288th fynnkroeger 452 124 9ms 22 Jan 2021 288th NicoAdams 452 124 10ms 21 Dec 2021 288th nstearns96 🇬🇧 452 124 9ms 12 Jan 2023 288th aalec 452 124 9ms 21 Apr 2024 288th Alban-Boissard 452 124 9ms 14 Jun 2025 293rd guliyevemil1 🇦🇿 448 125 9ms 30 Jan 2021 293rd martinnorling 🇸🇪 448 125 10ms 14 Feb 2022 293rd mrxz 🇳🇱 448 125 9ms 23 Jun 2024 293rd RedzGoose 🇦🇺 448 125 9ms 14 Oct 2024 293rd ffelixm 448 125 10ms 1 Jun 2025 298th ValdeQwerty 444 126 10ms 10 Jun 2020 298th bryan15 444 126 10ms 26 Aug 2021 298th bthalheim 444 126 9ms 8 Sep 2022 298th MaxElf999 444 126 10ms 27 Sep 2022 298th quarl 444 126 9ms 12 Nov 2024 303rd celynw 441 127 9ms 4 Aug 2020 303rd krcs 🇵🇱 441 127 10ms 25 Dec 2021 303rd jm600 441 127 9ms 15 Apr 2022 303rd msbranicky 441 127 9ms 5 Jul 2023 307th PFischbeck 438 128 9ms 13 Jun 2018 307th mossprescott 438 128 10ms 10 Jan 2023 307th Player01osu 438 128 10ms 29 Oct 2023 310th midnattssol 🇸🇪 434 129 10ms 27 Jul 2023 310th smokestacklightnin 🇺🇸 434 129 9ms 17 Dec 2023 312th 130N35 431 130 9ms 28 Jan 2020 312th PhysicDev 🇫🇷 431 130 11ms 19 May 2021 312th mbittner20 431 130 10ms 27 May 2023 312th audrey314 431 130 9ms 29 Oct 2023 312th ValentinCassayre 431 130 11ms 27 Jul 2024 317th MichaelMBradley 🇨🇦 427 131 9ms 3 Apr 2022 317th moustave 427 131 9ms 3 Dec 2024 319th Shreyas-21 424 132 10ms 17 Feb 2021 319th 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