The Calendar hole will go live in approximately 4 days. Why not try and solve it ahead of time?
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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 718th bricknellj 666 88 15ms 7 Feb 2023 718th Fracture17 666 88 15ms 12 Apr 2023 718th zacjl 666 88 16ms 19 Apr 2023 718th StefanHabel 🇨🇦 666 88 15ms 17 Sep 2023 718th bzijlema 🇳🇱 666 88 16ms 30 Nov 2023 718th 051 🇸🇬 666 88 14ms 26 Dec 2023 718th FCORMERAIS 666 88 9ms 7 Mar 2024 718th CaedenHarper 🇨🇦 666 88 15ms 2 Aug 2024 718th Bulmenisaurus 666 88 15ms 10 Nov 2024 718th ryyyn 🇺🇸 666 88 15ms 11 Jun 2025 718th edsrzf 🇳🇿 666 88 15ms 12 Jun 2025 718th Lv0Sys 🇵🇱 666 88 16ms 22 Jun 2025 718th xDragoxboi 666 88 15ms 30 Jun 2025 718th blaztoma 🇱🇹 666 88 15ms 1 Oct 2025 718th Babafaba 666 88 16ms 18 Oct 2025 718th ApoChagi 666 88 15ms 18 Oct 2025 737th MeWhenI 🇻🇦 664 113 99ms 8 Mar 2023 738th roavin 664 134 361ms 27 Jun 2022 739th ovs-code 🇩🇪 662 84 407ms 29 Apr 2024 739th dokutan 662 84 356ms 20 Apr 2025 741st Alex-x90 🇺🇸 662 113 1ms 7 Mar 2023 742nd sean-niemann 🇺🇸 662 134 38ms 19 Nov 2024 743rd MeWhenI 🇻🇦 660 170 39ms 4 Sep 2024 744th stefangimmillaro 659 89 15ms 15 May 2022 744th jipsong 🇩🇪 659 89 14ms 21 Jul 2024 744th croc54 659 89 10ms 28 Nov 2024 747th jacobly0 🇺🇸 658 228 1,708ms 22 Apr 2024 748th ashtraypettingzoo 🇺🇸 657 48 2ms 5 Apr 2023 749th BBoehm 🇩🇪 656 52 145ms 12 Feb 2021 750th dizzyliam 655 126 116ms 27 Oct 2021 751st stefangimmillaro 654 136 388ms 15 Jun 2025 752nd stefangimmillaro 654 159 455ms 6 Oct 2025 753rd Yewzir 🇧🇪 654 183 279ms 25 Oct 2023 754th btjones0 653 118 12ms 5 Jan 2021 755th RocketRammer 🇬🇧 651 84 224ms 14 Jul 2023 756th RDShah 651 89 9ms 6 Jan 2022 756th akshatj27 🇦🇶 651 89 9ms 11 Jan 2022 758th nullie 651 90 15ms 9 Jun 2022 758th FortuiteMan 🇫🇷 651 90 16ms 14 Jul 2025 758th jacekwladzinski 651 90 14ms 4 Oct 2025 761st MeWhenI 🇻🇦 651 163 43ms 20 May 2023 762nd MeWhenI 🇻🇦 651 184 274ms 9 Feb 2023 763rd Yewzir 🇧🇪 648 156 464ms 9 Feb 2024 764th btjones0 648 186 160ms 5 Jan 2021 765th jared-hughes 647 119 12ms 17 Jul 2022 766th SwordF-Official 644 49 3ms 20 Jun 2025 767th RustemB 🇷🇺 644 53 138ms 6 Dec 2020 768th Ralac07 🇦🇺 644 76 39ms 4 Jul 2024 769th fourth-bit 644 91 15ms 12 Nov 2022 769th mathisfun271 644 91 15ms 13 Feb 2024 771st klixel 🇨🇦 642 188 165ms 6 Nov 2024 772nd HumanoidCPU 639 87 370ms 23 May 2024 772nd JunkIce 639 87 357ms 3 Dec 2024 774th 77Tigers 637 92 10ms 19 Feb 2021 774th smartiel 637 92 10ms 18 Sep 2022 774th alexeldridge 637 92 10ms 10 Aug 2024 777th Shanethegamer 🇺🇸 636 91 8ms 26 Apr 2022 777th HumanoidCPU 636 91 9ms 26 Apr 2024 779th jtaxen 635 120 134ms 15 Jul 2024 780th Toanuvo 634 59 33ms 20 Jan 2022 781st Shanethegamer 🇺🇸 633 139 19ms 12 Sep 2022 782nd MeWhenI 🇻🇦 633 151 2ms 20 Feb 2023 783rd itiievskyi 🇺🇦 632 54 144ms 5 Jan 2021 784th SirBogman 🇺🇸 632 88 400ms 15 Jan 2024 784th m-tkach 🇺🇦 632 88 343ms 20 Jan 2024 784th Babafaba 632 88 349ms 4 Nov 2025 787th primo-ppcg 🇹🇭 631 165 410ms 4 Aug 2021 788th jm600 630 93 10ms 17 Apr 2022 788th Kacarott 🇦🇺 630 93 14ms 26 Sep 2023 788th robin-scragg 630 93 9ms 27 Jun 2025 791st johnnythedoggie 630 119 90ms 3 Mar 2021 792nd a6166231 🇨🇳 629 92 9ms 5 Jun 2025 793rd Salutations45 629 95 2ms 19 Dec 2024 794th dokutan 627 142 349ms 25 Sep 2025 795th msbranicky 627 191 290ms 7 Jan 2025 796th 4hg 🇺🇸 624 60 34ms 3 Mar 2023 797th marcin7Cd 624 94 10ms 9 Dec 2020 797th Natanaelel 🇸🇪 624 94 15ms 22 Aug 2022 797th firegene 🇮🇪 624 94 9ms 4 Jan 2023 800th MeWhenI 🇻🇦 624 141 3ms 10 Sep 2022 First Prev 721–800 of 2,023 Next Last