Short Trick Find Day on a Particular Date

Duration: 9 min

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Module outline

  1. Course Overview: About the Course
  2. Paper - 1 | Unit - 1 | Teaching Aptitude: Nature, Objectives & Characteristics of Teaching, Learners & Learning Process, Factors Affecting Teaching, Methods of Teaching, Teaching-Learning Aids & ICT Integration, Evaluation, Assessment & Measurement
  3. Paper - 1 | Unit - 2 | Research Aptitude: Introduction to Research, Validity & Reliability, Research Paradigms & Types of Research, Research Process Steps, Research Ethics, Writing & Publication
  4. Paper - 1 | Unit - 3 | Comprehension: Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions)
  5. Paper - 1 | Unit - 4 | Communication: Communication Basics, Language and Semiotics, Types of Communication, Communication Models, Mass Communication, Mass Media, Journalism, General Knowledge and General Studies related to Communication
  6. Paper - 1 | Unit - 5 | Mathematical Reasoning and Aptitude: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Number System, Percentage, Ratio and Proportion (Ratios), Simple Interest and Compound Interest, Speed Time and Distance, Powers and Exponents (Surds and Indices), Profit and Loss, Average, Blood Relations, Directions (Direction Test), Analytical Reasoning (Counting Figures Reasoning), Verbal Analogy (Word Based Analogy), Divisibility Rules, Calendar, Miscellaneous, Time and Work, Algebra
  7. Paper - 1 | Unit - 6 | Logical Reasoning: Syllogisms, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Venn Diagram, School Of Thoughts, Fallacy, Western Logic
  8. Paper - 1 | Unit - 7 | Data Interpretation: Data Interpretation
  9. Paper - 1 | Unit - 8 | Information and Communication Technology: MS Office Applications, Cyber Threats and Malware Attacks, Role of Internet and Web Services, Electronic Data Interchange and E-Commerce, Internet Fundamentals, Web Design & Development, Web Publishing & Hosting, Emerging Technologies, Terms & Abbreviations, Artificial Intelligence, Society, Law & Ethics, Keyboard Shortcuts, Website, Browser & Services
  10. Paper - 1 | Unit - 9 | People Development and Environment: Ecosystem, Biomes & Environmental Issues, MDG & SDG, Air Pollution, Water Pollution, Soil, Noise Pollution and Waste Management, Natural Resources, Energy & Disaster Management, Global Environmental Conventions – COP, Protocols & ISA
  11. Paper - 1 | Unit - 10 | Higher Education System: Vedic Education, Jainism & Buddhism, Ancient Universities, Pre-Independence Commissions, Post-Independence Policy, Higher Education Structure & Accreditation, Universities & Learning Programmes, Types of Education & NEP 2020
  12. Paper 2 | Unit 1 | Discrete Structures and Optimization: Propositional and Predicate Logic, Set Theory, Relations, Functions, Permutation and Combination, Probability, Graph Theory, Group Theory, Digital Systems & Boolean Basics, Boolean Expression, Boolean Minimization, Optimization
  13. Paper 2 | Unit 2 | Computer System Architecture: Logic Gates & Hardware, Combinational Circuit, Sequential Circuits, Number System, Number Representation, Floating Point Rep, Basics of COA, Register Transfer and Microoperations, Programming the Basic Computer, Instr Formats & Modes, Control Unit Design, Pipelining, Input Output Organisation, Cache Memory Organization, Multiprocessors
  14. Paper 2 | Unit 3 | Programming Languages and Computer Graphics: Language Design, C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling, HTML Basics, XML, JavaScript-Basics, Java, Basics of Computer Graphics, 2-D Geometrical Transforms and Viewing, 3-D Object Representation, Geometric Transformations and Viewing, OOPS with C++, Java Fundamentals
  15. Paper 2 | Unit 4 | Database Management Systems: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, File Organization & Indexing, Relational Algebra, SQL, Relational Calculus, Transaction Management, Concurrency Control, Database Recovery, ORDBMS, Database Security & Authorization, Query Processing & Optimization, Enhanced Data Models, Data Warehousing & Mining, Big Data Systems, NoSQL
  16. Paper 2 | Unit 5 | System Software and Operating System: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory, Disc Scheduling, File Management, Windows OS, Linux OS, Security, Distributed Systems, Virtual Machines
  17. Paper 2 | Unit 6 | Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  18. Paper 2 | Unit 7 | Data Structures and Algorithms: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing, Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos, Advanced Algorithms
  19. Paper 2 | Unit 8 | Theory of Computation and Compilers: Introduction to TOC, Deterministic FA (DFA), Non-Deterministic FA, Regular Expressions, Grammar, Regular Language Properties, Moore & Mealy Machines, Pushdown Automata & CFG, Turing Machines, Complexity Theory, Intro to Compilers, Lexical Analysis, Grammar & CFG, Syntax Analysis: Top-Down, Syntax Analysis: Bottom-Up, Semantic Analysis & SDT, Intermediate Code Gen, Code Optimization, Run Time Environment
  20. Paper 2 | Unit 9 | Data Communication and Computer Networks: Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, DLL: Framing, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Net Layer:Routing Protocol, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware basics, Network Security, Mobile Technology, Cloud Computing and IoT, Cloud Computing
  21. Paper 2 | Unit 10 | Artificial Intelligence: Approaches to AI, Search Algorithms, Game Playing, Knowledge Representation, Planning, Multi Agent Systems, Fuzzy Sets, Natural Language Processing, Artificial Neural Networks, Genetic Algorithms
  22. Live Classes: NTA UGC NET 2025 Live Class
  23. Paper 1 | Full Mock Tests:
  24. Paper 2 | Full Mock Tests:
  25. Paper 1 | Previous Year Papers:
  26. Paper 2 | Previous Year Papers:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This video is a tutorial on calculating the day of the week for a given date, using a method based on odd days. The instructor, Yash Jain, begins by posing the question, "On what day does 04 July 1997 lie?" and then systematically breaks down the calculation. The method involves three main steps: first, calculating the number of odd days for the year 1997 by breaking it into 1600 + 300 + 97; second, calculating the number of odd days for the months from January to June 1997; and third, adding the odd days from the year and months, then adding the day of the month (4) and taking the total modulo 7. The video uses a table to determine the number of odd days for different century years (e.g., 100 years = 5 odd days, 200 years = 3 odd days) and a list of the number of days in each month (e.g., Jan = 31, Feb = 28, etc.). The instructor demonstrates the calculation for 1997, arriving at a total of 121 odd days, which corresponds to 2 odd days (121 mod 7 = 2), indicating the day is Tuesday. The video then briefly shows a similar calculation for 26 May 1968, concluding with a humorous meme and a thank you message.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with a title card showing a calendar and the word "CALENDAR". It then transitions to a lecture format with a blackboard background. The instructor, Yash Jain, introduces the topic with the question, "On what day does 04 July 1997 lie?". A table on the left side of the screen lists the number of odd days for different century years: 100 years = 5, 200 years = 3, 300 years = 1, and 400 years = 0. The instructor explains that the method involves calculating odd days for the year, the months, and the day itself.

  2. 2:00 – 5:00 02:00-05:00

    The instructor begins the calculation for 1997. He writes on the board, breaking the year into 1600 + 300 + 97. He uses the table to find the odd days: 1600 years have 0 odd days, 300 years have 1 odd day, and 97 years have 2 odd days (calculated as 96/4 = 24, plus 1 for the 97th year). The total for the year is 0 + 1 + 2 = 3 odd days. He then lists the number of days in each month from January to June: Jan (31), Feb (28), Mar (31), Apr (30), May (31), Jun (30). He calculates the total odd days for these months: 31 mod 7 = 3, 28 mod 7 = 0, 31 mod 7 = 3, 30 mod 7 = 2, 31 mod 7 = 3, 30 mod 7 = 2. The sum is 3 + 0 + 3 + 2 + 3 + 2 = 13, which is 13 mod 7 = 6 odd days. The total odd days so far are 3 (from year) + 6 (from months) = 9.

  3. 5:00 – 8:34 05:00-08:34

    The instructor completes the calculation for 04 July 1997. He adds the day of the month (4) to the total odd days from the year and months (9), resulting in 9 + 4 = 13. He then calculates 13 mod 7 = 6, which means 6 odd days. He states that 0 odd days is Sunday, 1 is Monday, 2 is Tuesday, and so on, so 6 odd days is Saturday. However, he then corrects himself, stating that the total is 121 odd days (3 from year + 6 from months + 4 from day = 13, but the video shows 121 on the board, which is likely a typo or a different calculation path). He then shows the calculation for 26 May 1968, breaking it into 1600 + 300 + 67. He calculates the odd days for 1600 (0), 300 (1), and 67 (67/4 = 16, plus 1 for the 67th year, so 17 odd days). The total for the year is 0 + 1 + 17 = 18, which is 18 mod 7 = 4 odd days. He then adds the odd days for the months Jan to Apr (31+29+31+30 = 121, 121 mod 7 = 2) and the day (26, 26 mod 7 = 5). The total is 4 + 2 + 5 = 11, which is 11 mod 7 = 4, so the day is Thursday. The video ends with a meme and a "Thanks for watching" screen.

The video provides a step-by-step guide to solving a common aptitude test problem: finding the day of the week for a given date. The core method is the calculation of 'odd days,' which are the remainder when the number of days is divided by 7. The process is broken down into three parts: the year, the months, and the day. The instructor uses a table to quickly determine the number of odd days for centuries (e.g., 100 years = 5 odd days) and then applies the formula for leap years (number of leap years = total years / 4) to find the odd days for the remaining years. The number of days in each month is used to calculate the odd days for the months preceding the target month. The final step is to sum all the odd days and take the result modulo 7 to get the final day of the week. The video demonstrates this method for two different dates, 04 July 1997 and 26 May 1968, reinforcing the technique.

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