Greenwich Mean Time
Greenwich Mean Time is a Geography concept from the MPSC syllabus, tested in 2 past MPSC questions (2018, 2020). Below are those real questions with their correct answers and explanations, plus the concepts worth being comfortable with first.
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खालील विधानांची सत्यता तपासा खालीलपैकी कोणते विधान बरोबर आहे ते ओळखा : विधान 'अ' : पृथ्वी 24 तासांमध्ये 360° रेखांशत फिरते. विधान 'ब' : प्रत्येक रेखावृत्त ओलांडण्यास पृथ्वीला चार मिनिटाचा कालावधी लागतो. Examine the following statements and identify the correct statement/s : Statement 'A' : Within 24 hours the Earth rotates in 360° longitudes. Statement 'B' : The Earth requires four minutes to cross the one degree longitude.
(a)पृथ्वी 24 तासांमध्ये 360° रेखांशत फिरते. / Within 24 hours the Earth rotates in 360° longitudes.
(b)प्रत्येक रेखावृत्त ओलांडण्यास पृथ्वीला चार मिनिटाचा कालावधी लागतो. / The Earth requires four minutes to cross the one degree longitude.
Statement A is correct as the Earth completes 360° rotation in 24 hours. Statement B is also correct because crossing 1 degree of longitude takes 4 minutes (240 minutes / 360 degrees).
जर भारतामध्ये प्रमाण वेळ दुपारचे बारा अशी असेल, तर त्याचवेळी अनुक्रमे ग्रिनीच व आंतरराष्ट्रीय बार रेषा या रेखावृत्तावर वेळ काय असेल? If the time in India is 12:00 Noon, what would be the time simultaneously at the Greenwich meridian and the International date line, respectively?
(a)सकाळ 6:30 व सायंकाळ 6:30
(b)सायंकाळ 6:30 व सकाळ 6:30
(c)सकाळ 6:30 व सायंकाळ 5:30
(d)सायंकाळ 6:30 व सकाळ 5:30
India's standard time is GMT+5:30. When it is 12:00 Noon in India, Greenwich (GMT) is 5.5 hours behind, making it 6:30 AM. The International Date Line is 12 hours ahead of GMT, making it 6:30 PM.