The Calendar hole will go live in approximately 50 mins. Why not try and solve it ahead of time?
PalindromemordnilaP 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 ArkScript 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 ArkScript 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 75th neihousaigaai 879 91 9ms 28 Sep 2024 75th Rubiksmath 879 91 11ms 1 Oct 2024 75th lifthrasiir 🇰🇷 879 91 11ms 20 Nov 2024 75th jameswmccarty 879 91 10ms 2 Dec 2024 75th croc54 879 91 11ms 12 Jan 2025 75th Pyroan 879 91 11ms 24 Feb 2025 75th plcc0 879 91 11ms 6 Mar 2025 75th WillowWispy 879 91 11ms 21 Mar 2025 75th keelimeguy 🇺🇸 879 91 10ms 17 May 2025 75th albanian-laundromat 879 91 11ms 5 Jun 2025 75th clayboll99 879 91 11ms 15 Jul 2025 75th blaztoma 🇱🇹 879 91 10ms 21 Sep 2025 75th vhoulbreque 🇫🇷 879 91 10ms 21 Nov 2025 75th FortuiteMan 🇫🇷 879 91 11ms 30 Nov 2025 75th LostSyntax21 🇬🇧 879 91 10ms 30 Nov 2025 75th CaedenHarper 🇨🇦 879 91 30ms 1 Dec 2025 75th Lv0Sys 🇵🇱 879 91 9ms 21 days ago 75th JOrE20 🇺🇸 879 91 10ms 8 days ago 75th solisolu 879 91 11ms 7 hours ago 100th dokutan 870 92 10ms 3 Sep 2024 100th fourth-bit 870 92 10ms 4 Sep 2024 100th bnic24 870 92 10ms 5 Sep 2024 103rd adamnielson42 🇺🇸 860 93 9ms 7 Oct 2024 103rd guilhem-roy 🇫🇷 860 93 14ms 31 May 2025 105th mousetail 🇳🇱 851 94 13ms 1 Sep 2024 105th ljweel 851 94 10ms 12 Sep 2024 105th qpwoeirut 851 94 12ms 7 Feb 2025 108th msbranicky 842 95 11ms 1 Sep 2024 108th Bulmenisaurus 842 95 12ms 4 Sep 2024 108th btjones0 842 95 10ms 13 Sep 2024 108th jfallon1997 842 95 10ms 26 Sep 2024 108th jacekwladzinski 842 95 10ms 7 Oct 2025 108th aalec 842 95 10ms 8 Nov 2025 114th fgrosshans 🇫🇷 833 96 10ms 1 Sep 2024 114th Mikey-Beep 🇬🇧 833 96 10ms 2 Sep 2024 114th JudeTyrrell 833 96 10ms 22 Sep 2024 117th o0BlackDragon0o 825 97 13ms 8 Sep 2024 117th Bombalech 825 97 10ms 8 Sep 2024 117th scpchicken 🇵🇼 825 97 248ms 8 Sep 2024 117th Carlettos1 825 97 12ms 14 Sep 2024 121st HumanoidCPU 816 98 12ms 2 Sep 2024 121st dtbao20 🇻🇳 816 98 16ms 30 Sep 2024 121st YAJUE114514 816 98 10ms 30 Jul 2025 121st luuumine 🇫🇷 816 98 10ms 15 Oct 2025 125th jatloe 808 99 11ms 4 Sep 2024 125th alexeldridge 808 99 10ms 14 Sep 2024 125th Just4FunCoder 808 99 10ms 14 Sep 2025 125th 0xjac 🇨🇭 808 99 10ms 24 Nov 2025 129th Kacarott 🇦🇺 800 100 10ms 3 Sep 2024 129th Artemis21 🇬🇧 800 100 11ms 4 Jan 2025 131st madex 🇩🇪 792 101 14ms 1 Sep 2024 131st RedzGoose 🇦🇺 792 101 10ms 15 Oct 2024 131st JunkIce 792 101 11ms 25 Oct 2024 131st Flekay 🇩🇪 792 101 11ms 10 Jul 2025 135th sciencejiho 784 102 10ms 13 Sep 2024 135th Papushkado 784 102 9ms 10 Nov 2025 137th julian-hoelz 777 103 10ms 16 Sep 2024 137th StefanHabel 🇨🇦 777 103 97ms 22 Mar 2025 139th ComputerKWasTaken 🇺🇸 769 104 10ms 2 Sep 2024 139th elgan65536 769 104 9ms 23 Sep 2024 139th NickTheEASDude 🇺🇸 769 104 10ms 7 Oct 2025 142nd CutSandstone 755 106 13ms 21 Dec 2024 143rd galloj 🇨🇿 748 107 10ms 4 Sep 2024 143rd FlorianCassayre 🇫🇷 748 107 12ms 9 Sep 2024 143rd jared-hughes 748 107 10ms 10 Sep 2024 143rd nstearns96 🇬🇧 748 107 10ms 13 Nov 2024 143rd rchalamala 748 107 10ms 2 Jan 2025 143rd brochmann 🇸🇪 748 107 10ms 16 Oct 2025 149th JesseNoEyes 🇺🇸 741 108 9ms 30 Sep 2024 150th Mabeloid 🇳🇴 734 109 10ms 1 Sep 2024 150th MassimoParisi 734 109 11ms 18 Sep 2024 150th klixel 🇨🇦 734 109 10ms 21 Sep 2024 150th NotNoper 734 109 9ms 29 Oct 2024 150th za3k 734 109 11ms 15 Jul 2025 150th RaBa21 🇭🇺 734 109 11ms 18 Jul 2025 150th zgialor-lab 734 109 11ms 14 days ago 157th aksyristos 721 111 11ms 1 Sep 2024 157th wh3n3v3r 🇨🇿 721 111 10ms 11 Nov 2024 157th AstroOrbis 721 111 10ms 30 Jun 2025 160th LeoCh01 690 116 9ms 1 Sep 2024 First Prev 81–160 of 185 Next Last