UnescostampsJun 27, 2025
https://unescowhstamps.blogspot.com
Maritime Greenwich, United Kingdom – UNESCO World Heritage Site
#UNESCO #PatrimonioMundial #WorldHeritage #Welterbe #Philately #Filatelia #Sellos #Stamps #Timbres #Philatelie #Briefmarken #UNESCOWorldHeritage #Greenwich #MaritimeGreenwich #RoyalObservatory #GreenwichPark #RoyalObservatoryGreenwich #PrimeMeridian
Eugene Alvin Villar 🇵🇭Aug 3, 2024

This is one of the uncommon @standupmaths videos where I already knew the story/maths behind it. 😁

https://youtu.be/XB5xuAhrkWE

#PrimeMeridian #Greenwich #GPS #IERS #IERSReferenceMeridian

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Chris KoesterNov 4, 2023
Royal Greenwich Observatory

May 2023 Christoph Koester #Greenwich #London

#greenwichpark #royalobservatory #observatory #GreenwichMeanTime #GMT #england #GreenwichMeridian #PrimeMeridian #monochrome
Chris KoesterNov 4, 2023
Greenwich Park with Royal Greenwich Observatory

May 2023 Christoph Koester | #Greenwich #London

#greenwichpark #royalobservatory #observatory #GreenwichMeanTime #GMT #england #greatbritain #unitedkingdom #GreenwichMeridian #PrimeMeridian #monochrome
Graham PenthenyJun 10, 2023
People suggested I should be more positive, so I took it to heart and crossed the Y axis. #primemeridian
Chris Koester (old account)Jun 9, 2023
What time is it? It's Greenwich time!

May 2023 Christoph Koester Greenwich, London

#royalobservatory #observatory #GreenwichMeanTime #GMT #england #eng #greatbritain #gb #unitedkingdom #uk #GreenwichMeridian #PrimeMeridian #monochrome #bw #sw #nb #noiretblanc #schwarzweiß #blackandwhite
Chris Koester (old account)Jun 3, 2023
Royal Greenwich Observatory

2023/05/20 Christoph Koester #greenwich #london

#greenwichpark #royalobservatory #observatory #GreenwichMeanTime #GMT #england #eng #greatbritain #gb #unitedkingdom #uk #GreenwichMeridian #PrimeMeridian #monochrome #bw #sw #nb #noiretblanc #schwarzweiß #blackandwhite
Chris Koester (old account)Jun 3, 2023
Greenwich Park and Royal Greenwich Observatory

2023/05/20 Christoph Koester #greenwich #london

#greenwichpark #royalobservatory #observatory #GreenwichMeanTime #GMT #england #eng #greatbritain #gb #unitedkingdom #uk #GreenwichMeridian #PrimeMeridian #monochrome #bw #sw #nb #noiretblanc #schwarzweiß #blackandwhite
Adamas NemesisApr 22, 2023

My thoughts wander cartographically, from gnomonic projections to prime meridians to the land and water hemispheres.

Read more at my #blog: https://www.adamasnemesis.com/2023/04/22/more-fun-with-cartography/

This post's featured image is a 1657 map by Jan Janssonius.

#cartography #geography #geometry #primemeridian #maps #mapprojections #gnomonicprojection #greatcircles #greatcirclenavigation #greatcircleroutes #landhemisphere #waterhemisphere #demography

More Fun with Cartography, Adamas Nemesis

Seems to be a month of map projections on here.

Adamas Nemesis
Andreas ScherbaumJan 8, 2019

The #PrimeMeridian at the Royal Observatory in #Greenwich is not exactly at #GPS longitude 0 - but instead about a 100 meters to the east.

That's because GPS is based on #WGS84 (geodetic system) and the Prime Meridian is based on the astronomical longitude