Day and night to be equal Thursday
September 22nd, 2010 - 6:23 pm ICT by IANSNew Delhi, Sep 22 (IANS) Day and night will be of equal duration Thursday, marking the beginning of autumn in northern hemisphere.
During an autumnal equinox, the sun shines directly overhead as viewed from the earth’s equator.
“An equinox happens twice every year, when there is a location on the earth’s equator where the centre of the sun can be observed to be vertically overhead, occurring around March 20/21 and Sep 22/23 each year,” said Chandrabhushan Devgun of the Science Popularisation Association of Communicators and Educators (SPACE).
Devgun said on these two dates, the day and the night are of equal lengths anywhere on the surface of the earth.
SPACE will be performing public outreach at Jantar Mantar to explain to people the concept of equinox, using the ancient instruments. The programme will be held from 11 a.m. to 4 p.m.
“Telescopes and solar filter goggles will be set up for solar observations. Large number of students have registered with us to participate in the several activities to be conducted during the day,” he said.
- Day, night to be equal Monday - Mar 21, 2011
- Day and night to be equally long Saturday - Mar 19, 2010
- Watch autumn equinox at Jantar Mantar Thursday - Sep 21, 2011
- Delhi schoolkids observe autumn equinox - Sep 23, 2011
- Solar fest in Delhi on longest day of the year - Jun 20, 2011
- Delhi celebrates longest day of year with solar fest - Jun 21, 2011
- Jupiter, Uranus to shine brightest Tuesday - Sep 20, 2010
- Watch 'Ring of Fire' during Monday's solar eclipse - May 19, 2012
- Year's shortest day Wednesday - Dec 21, 2010
- World Space Week to be observed from Tuesday - Oct 03, 2011
- Watch out for Geminid meteor shower Wednesday - Dec 12, 2011
- Partial solar eclipse Jan 4 - Dec 29, 2010
- Eureka! Delhi school boys discover new asteroid (With Images) - Aug 14, 2010
- Mars to be closest to Earth on March 5 - Mar 02, 2012
- India to miss total solar eclipse - Jul 11, 2010
Tags: ancient instruments, autumnal equinox, beginning of autumn, centre of the sun, communicators, duration, earth space, equator, equinox, goggles, mantar, New Delhi, northern hemisphere, public outreach, science popularisation, solar filter, solar observations, telescopes