The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Christmas Trees 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 556th jrm5399 🇰🇿 563 96 12ms 2 Nov 2021 556th joshmoody24 563 96 12ms 4 Mar 2022 556th ramsay 563 96 9ms 10 Aug 2022 556th DrPrettyman 563 96 9ms 3 Jul 2023 556th CameronGBell 563 96 10ms 23 Jan 2025 556th LordSir101 563 96 9ms 11 Aug 2025 567th ly0va 557 97 11ms 6 Jan 2019 567th omgardner 557 97 11ms 28 Feb 2019 567th maxumusprime 557 97 11ms 18 Feb 2020 567th itsbjoern 557 97 9ms 8 Dec 2020 567th dgambit 557 97 11ms 2 Apr 2021 567th lukehatcher 🇺🇸 557 97 11ms 29 Aug 2021 567th danielweper 557 97 11ms 21 Oct 2021 567th borosilicate 557 97 10ms 6 May 2022 567th bthalheim 557 97 10ms 3 Sep 2022 567th n0es 557 97 12ms 18 Oct 2022 567th Glinte 557 97 11ms 15 Dec 2023 567th 123mjb 557 97 9ms 3 Jan 2024 567th damoose717 557 97 9ms 23 May 2025 580th GiorgioBalestrieri 551 98 12ms 20 Mar 2019 580th jamesbtan 551 98 14ms 25 Mar 2019 580th ian-h-chamberlain 🇺🇸 551 98 11ms 14 Dec 2019 580th Reyzartz 551 98 9ms 19 Sep 2020 580th pvilimas 551 98 10ms 18 Feb 2021 580th mamakram 551 98 10ms 20 Oct 2021 580th katharine67 551 98 10ms 8 Oct 2022 580th PotatoSaladOverlord 551 98 9ms 19 May 2023 580th PedroAS7 551 98 9ms 18 Jun 2024 589th arnavb 545 99 10ms 6 Oct 2018 589th Cortan122 545 99 9ms 26 Feb 2019 589th shraiwi 545 99 9ms 12 Jul 2019 589th Theis24 545 99 9ms 27 Nov 2019 589th confy 545 99 9ms 27 Oct 2020 589th OppositeShark 545 99 10ms 19 Jul 2022 589th willdaspit 545 99 11ms 7 Aug 2023 589th TinyTheBrontosaurus 545 99 9ms 3 Dec 2023 589th roguh 🇬🇹 545 99 10ms 14 Jan 2024 589th ComputerKWasTaken 🇺🇸 545 99 9ms 31 May 2024 589th Ralac07 🇦🇺 545 99 10ms 4 Aug 2025 589th Aquateraneal 545 99 10ms 4 Nov 2025 589th Voltrifrodec 🇸🇰 545 99 9ms 7 Nov 2025 602nd fatcat2 540 100 10ms 4 Jan 2020 602nd tomh1012 540 100 9ms 29 Oct 2020 602nd try-except-try-accept 🇹🇭 540 100 9ms 27 Jun 2022 602nd Pimveha 540 100 12ms 12 Jan 2023 602nd Shiran-Yuan 540 100 9ms 5 Apr 2023 602nd r-i-c-e 540 100 10ms 8 Jul 2023 602nd ssbhatt4321 540 100 10ms 14 Oct 2023 602nd alexjurkiewicz 🇦🇺 540 100 10ms 7 Nov 2023 602nd tperr 540 100 9ms 29 Sep 2024 611th cpt-John 535 101 11ms 25 Jun 2019 611th hyphz 535 101 12ms 14 Jan 2020 611th YoranDS 535 101 9ms 25 Nov 2021 611th danielolson13 535 101 10ms 7 Aug 2022 611th Azearia 535 101 9ms 27 Feb 2024 611th MassimoParisi 535 101 9ms 23 Sep 2024 617th derekthatcher 529 102 9ms 18 Sep 2020 617th Schreipfelerer 529 102 9ms 27 Nov 2023 617th epic-programmer-guy 529 102 9ms 25 Dec 2023 620th estomagordo 🇳🇱 524 103 11ms 2 Feb 2020 620th goombado 524 103 11ms 14 Oct 2020 620th asadullayev 524 103 9ms 5 Mar 2021 620th matricronia 524 103 9ms 6 May 2021 620th bbakersmith 524 103 18ms 1 Jul 2021 620th LukasFolwarczny 🇨🇿 524 103 11ms 17 Sep 2022 620th goGuru 524 103 11ms 17 Dec 2022 620th roylucas 524 103 10ms 16 Jan 2023 620th Joe85gr 524 103 18ms 30 Sep 2023 620th l-donovan 524 103 9ms 6 Feb 2024 620th NickTheEASDude 🇺🇸 524 103 9ms 11 Apr 2024 631st babulibaba 519 104 10ms 15 Aug 2019 631st besasam 519 104 10ms 31 Mar 2021 631st Hunter-Fairchild 519 104 11ms 30 Aug 2022 631st anonymaew 519 104 10ms 3 Aug 2023 631st azure-blondon 519 104 9ms 10 Feb 2024 631st RobertHoeh 519 104 9ms 16 May 2024 631st DanielBash 519 104 9ms 16 Feb 2025 631st Sharrrkkk 519 104 9ms 21 Jul 2025 639th hjcafaroUC 514 105 10ms 1 Aug 2020 639th wrhm 514 105 9ms 12 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