Author | Lightnews

OpenCage @opencagedata.bsky.social · 4d

Which means you have more time to practice by revisiting past questions over on the blog: https://blog.opencagedata.com/tagged/fridaygeotrivia

We will see you here on the 7th (17:00 Berlin 🇩🇪 time, 4pm London 🇬🇧, 11am New York 🇺🇸)

OpenCage Geotrivia - played on the final Friday of each month

Updates and musings from the makers of the OpenCage Geocoding API

blog.opencagedata.com

OpenCage @opencagedata.bsky.social · 4d

Normally we would play #fridaygeotrivia this coming Friday since it is the final Friday of the month, but due to some travel we will push things back by a week and instead play on 🗓️ Friday, Nov 7th

https://blog.opencagedata.com/post/geotrivia-october-2025

Geotrivia - October 2025

Blog > Monthly Geo Trivia questions

blog.opencagedata.com

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OpenCage @opencagedata.bsky.social · 13d

https://blog.opencagedata.com/post/openstreetmap-interview-osmpie-mikhail-kuzin

Interview: Mikhail Kuzin: OSMPIE

In this month’s edition of our OpenStreetMap interview series we speak with Mikhail Kuzin, one of the makers of OpenStreetMap editor OSMPIE

blog.opencagedata.com

OpenCage @opencagedata.bsky.social · 13d

We present for your weekend reading pleasure ...

the latest edition to our #OpenStreetMap interview series is a discussion with Mikhail Kuzin, one of the makers of OSMPIE (the OpenStreetMap Perfect Intersection Editor), a new OSM editor for the challenging task of editing road intersections.

Screenshot of the OSMPIE site : osmpie.org

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OpenCage @opencagedata.bsky.social · 14d

including our threads about

India https://en.osm.town/@opencage/114042486128539600

and

Time zones generally https://en.osm.town/@opencage/112812709046026868

OpenCage 👉🌍 (@[email protected])

Attached: 2 images This time in #geoweirdness we consider the oddities of the world's most populous country: India 🇮🇳 https://en.wikipedia.org/wiki/List_of_countries_by_population_(United_Nations) Prepare for a sub-continent worth of geographic strangeness, from the only third-order enclave in the world to the baffling anatomies of Indian addresses. 👇 1/

en.osm.town

OpenCage @opencagedata.bsky.social · 14d

13/ Time’s up! Thank you for delving into the oddities of 🇮🇳 🕓 Indian time with us

Any other countries with time-specific #geoweirdness we should explore? Let us know in the comments below.

As always we have many more geothreads over on our blog: https://blog.opencagedata.com/geothreads

Screenshot of the OpenCage blog page listing all of our geothreads

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OpenCage @opencagedata.bsky.social · 14d

including our threads about

India https://en.osm.town/@opencage/114042486128539600

and

Time zones generally https://en.osm.town/@opencage/112812709046026868

OpenCage 👉🌍 (@[email protected])

Attached: 2 images This time in #geoweirdness we consider the oddities of the world's most populous country: India 🇮🇳 https://en.wikipedia.org/wiki/List_of_countries_by_population_(United_Nations) Prepare for a sub-continent worth of geographic strangeness, from the only third-order enclave in the world to the baffling anatomies of Indian addresses. 👇 1/

en.osm.town

OpenCage @opencagedata.bsky.social · 14d

13/ Time’s up! Thank you for delving into the oddities of 🇮🇳 🕓 Indian time with us

Any other countries with time-specific #geoweirdness we should explore? Let us know in the comments below.

As always we have many more geothreads over on our blog: https://blog.opencagedata.com/geothreads

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OpenCage @opencagedata.bsky.social · 14d

The following piece covers these time zones very well and is well worth a read: https://www.atlasobscura.com/articles/bombay-time

#geoweirdness

The Long History of 'Bombay Time' and Resistance to Colonial Rule

For decades the city of Mumbai operated by two—or more—different clocks.

www.atlasobscura.com

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OpenCage @opencagedata.bsky.social · 14d

Set at 4 hours and 51 minutes ahead of GMT, it's still used in some Parsi fire temples today because it offers a more accurate representation of the sun's position in strict relation to their location.

https://en.wikipedia.org/wiki/Bombay_Time

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OpenCage @opencagedata.bsky.social · 14d

12/ Unlike other regional times that were replaced in 1906, Bombay Time endured much longer, until 1955

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OpenCage @opencagedata.bsky.social · 14d

11/ The Andaman and Nicobar Islands had their own time too — Port Blair Mean Time. Historical records describe it as 17 minutes and 17 seconds (UTC+6:10:37) ahead of Calcutta time.

https://en.wikipedia.org/wiki/Port_Blair_mean_time

#geoweirdness

Map showing the location of the Andaman and Nicobar Islands

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OpenCage @opencagedata.bsky.social · 14d

The following piece covers these time zones very well and is well worth a read: https://www.atlasobscura.com/articles/bombay-time

#geoweirdness

The Long History of 'Bombay Time' and Resistance to Colonial Rule

For decades the city of Mumbai operated by two—or more—different clocks.

www.atlasobscura.com

1

OpenCage @opencagedata.bsky.social · 14d

Set at 4 hours and 51 minutes ahead of GMT, it's still used in some Parsi fire temples today because it offers a more accurate representation of the sun's position in strict relation to their location.

https://en.wikipedia.org/wiki/Bombay_Time

1

OpenCage @opencagedata.bsky.social · 14d

12/ Unlike other regional times that were replaced in 1906, Bombay Time endured much longer, until 1955

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OpenCage @opencagedata.bsky.social · 14d

Madras, of course, was the old name for Chennai, changed in 1996.

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OpenCage @opencagedata.bsky.social · 14d

11/ The Andaman and Nicobar Islands had their own time too — Port Blair Mean Time. Historical records describe it as 17 minutes and 17 seconds (UTC+6:10:37) ahead of Calcutta time.

https://en.wikipedia.org/wiki/Port_Blair_mean_time

#geoweirdness

1

OpenCage @opencagedata.bsky.social · 14d

10/ Established in 1802 by John Goldingham, an astronomer at the British East India Company, Madras time was set at 5 hours, 21 minutes and 14 seconds ahead of Greenwich Mean Time, making it the closest regional time to today’s IST.

https://en.wikipedia.org/wiki/Madras_Time

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OpenCage @opencagedata.bsky.social · 14d

Madras, of course, was the old name for Chennai, changed in 1996.

1

OpenCage @opencagedata.bsky.social · 14d

By the late 19th century, ISRT was replaced by Madras Time

#geoweirdness

While we’re here, here’s an 1893 map of the Indian railway network:
https://www.irfca.org/faq/faq-misc.html

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OpenCage @opencagedata.bsky.social · 14d

10/ Established in 1802 by John Goldingham, an astronomer at the British East India Company, Madras time was set at 5 hours, 21 minutes and 14 seconds ahead of Greenwich Mean Time, making it the closest regional time to today’s IST.

https://en.wikipedia.org/wiki/Madras_Time

1

OpenCage @opencagedata.bsky.social · 14d

9/ Before IST was introduced in 1906, there were several regional time zones across the country.

Some of the offsets were… unorthodox.

The first time zone we’ll cover was “Indian Standard Railway Time” that used local Japalbur time, 34 minutes and 6 seconds behind Calcutta Time (UTC+5:53:20)

1

OpenCage @opencagedata.bsky.social · 14d

By the late 19th century, ISRT was replaced by Madras Time

#geoweirdness

While we’re here, here’s an 1893 map of the Indian railway network:
https://www.irfca.org/faq/faq-misc.html

1

OpenCage @opencagedata.bsky.social · 14d

9/ Before IST was introduced in 1906, there were several regional time zones across the country.

Some of the offsets were… unorthodox.

The first time zone we’ll cover was “Indian Standard Railway Time” that used local Japalbur time, 34 minutes and 6 seconds behind Calcutta Time (UTC+5:53:20)

1

OpenCage @opencagedata.bsky.social · 14d

#geoweirdness

1