The Calendar hole will go live in approximately 6 days. Why not try and solve it ahead of time?
12 Days of Christmas 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 477th Bmrl7 830 500 10ms 19 Mar 2024 477th planeklm 830 500 9ms 17 Dec 2024 477th raymur 830 500 9ms 26 Jun 2025 477th oween12 830 500 10ms 6 Aug 2025 485th adoxography 828 501 10ms 30 Mar 2018 485th sambirnbaum1 828 501 11ms 7 Sep 2019 485th ArturLukianov 828 501 10ms 27 Dec 2020 485th suhasdara 828 501 10ms 11 Sep 2022 485th ceeb9 828 501 9ms 5 May 2023 485th DrPrettyman 828 501 9ms 31 May 2023 485th lucaswiman 828 501 9ms 13 Aug 2023 485th damoose717 828 501 9ms 23 May 2025 485th bknower 828 501 9ms 25 Jun 2025 494th djtuBIG-MaliceX 827 502 15ms 30 Jan 2018 494th The3gs 827 502 10ms 13 Oct 2020 494th 77Tigers 827 502 10ms 28 Feb 2021 494th b4dpxl 827 502 10ms 10 Nov 2021 494th BrenSchaap 827 502 10ms 11 Nov 2021 494th firegene 🇮🇪 827 502 9ms 16 Dec 2021 494th thiccaxe 827 502 11ms 2 Oct 2022 494th EyalLitvin 827 502 9ms 16 Nov 2022 494th mikehanus 827 502 9ms 21 Nov 2023 503rd kypi 825 503 10ms 20 Feb 2020 503rd bastienvoirin 🇫🇷 825 503 10ms 28 Nov 2020 503rd bbakersmith 825 503 9ms 26 Jul 2021 503rd HassanAliKadhem 🇧🇭 825 503 29ms 5 Jan 2022 503rd Expurple 825 503 9ms 8 Jan 2022 503rd johnellis1392 825 503 9ms 5 Jan 2024 503rd ImpressedByRocks 825 503 9ms 13 Mar 2024 510th ArturLange 823 504 9ms 31 Aug 2018 510th NoliHyd 823 504 9ms 11 Oct 2018 510th badboj40 823 504 9ms 18 Jan 2023 510th unknown25001 823 504 9ms 18 Jul 2024 510th PyryL 🇫🇮 823 504 9ms 12 Aug 2024 510th Marsolo1 823 504 9ms 24 Sep 2024 516th Smoncko 822 505 10ms 1 Feb 2023 516th jrbud 822 505 9ms 30 Dec 2023 516th xiaoyiming123 822 505 9ms 11 Aug 2025 519th mizuzimu 820 506 11ms 4 Feb 2020 519th mokymok 🇺🇸 820 506 9ms 1 Dec 2021 519th AlexanderFair 820 506 9ms 18 Jul 2023 519th yuchuehw 820 506 10ms 4 Jan 2024 519th cykim8811 820 506 9ms 11 Jul 2024 519th 40fied4t 820 506 10ms 15 May 2025 519th Rogacz 820 506 9ms 9 Jun 2025 519th MyckollWinchester 820 506 9ms 14 days ago 527th JBcoding 819 507 16ms 7 Sep 2020 527th Thinthiner 819 507 17ms 7 Sep 2020 527th bsoyka 🇺🇸 819 507 9ms 30 Dec 2022 527th ozzypossie 819 507 9ms 26 May 2023 527th qwertzuioppel 819 507 9ms 4 Mar 2024 532nd TrAyZeN 817 508 10ms 18 Aug 2019 532nd befoster 817 508 9ms 10 Apr 2021 532nd pranavcode 817 508 28ms 26 Apr 2021 532nd Cloakless 🇬🇧 817 508 15ms 18 Oct 2021 532nd frankgraziano 817 508 10ms 14 Feb 2023 532nd tejapvk 817 508 10ms 18 Jun 2025 532nd wboka 817 508 10ms 17 hours ago 539th byteJager 815 509 10ms 3 Jan 2021 539th walterfeyman 815 509 10ms 30 Oct 2021 539th rollershutter 815 509 9ms 30 Nov 2021 539th gamer0kayf1n3 815 509 9ms 3 Jun 2022 539th RoscoeSmith 815 509 12ms 8 Sep 2022 539th lamorach 815 509 9ms 26 Mar 2024 539th lch823 815 509 10ms 7 days ago 546th adesanjo 814 510 9ms 16 Jun 2018 546th hoodadam 814 510 9ms 10 Jun 2019 546th amishtal 814 510 11ms 27 Nov 2019 546th cbondurant 814 510 9ms 27 Jul 2020 546th PhysicDev 🇫🇷 814 510 9ms 17 Mar 2022 546th galloj 🇨🇿 814 510 9ms 26 Aug 2022 546th sleepingtable 814 510 10ms 16 Sep 2022 546th Squidled 814 510 9ms 3 Jan 2023 546th PikeIt 814 510 11ms 14 Jun 2023 546th midnattssol 🇸🇪 814 510 9ms 27 Jul 2023 546th jtaxen 814 510 9ms 12 Jul 2024 546th VictorStenvers 🇳🇱 814 510 9ms 7 Oct 2024 546th ibixina 814 510 9ms 13 Oct 2024 546th kbeat 🇰🇿 814 510 10ms 6 Jun 2025 560th egelmex 812 511 9ms 15 Nov 2019 First Prev 481–560 of 1,130 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