@[email protected] to Map [email protected]English • 8 months agoTimezone changes between 1923 and 2023files.catbox.moeimagemessage-square45fedilinkarrow-up1208arrow-down16
arrow-up1202arrow-down1imageTimezone changes between 1923 and 2023files.catbox.moe@[email protected] to Map [email protected]English • 8 months agomessage-square45fedilink
minus-square@DarkCloudlink10•8 months agoTechnically every 30 metres there should be a 1 second time zone adjustment.
minus-square@[email protected]linkfedilinkEnglish10•edit-28 months agoThen we’d be back in pre-railway era.
minus-square@[email protected]linkfedilink3•8 months agoActually every 463 meters. 40 075km is circumference of Earth. There are 24x60x60 seconds in a day. 40 075×1 000÷(24×60 ×60) =~ 463.8
minus-square@[email protected]linkfedilink8•8 months agoWouldn’t it depend on latitude? It would be much less than 463 metres at the latitudes of Europe
minus-square@[email protected]linkfedilinkEnglish1•edit-28 months agoYes, distance of 1" on equator (463.8 m) × cosine of latitude longitude. This means approximately 350 m in Rome, 285,6 m in Berlin and 232 m in Helsinki. In reality a bit less, as I didn’t take the ellipsoid shape of the globe into account.
Technically every 30 metres there should be a 1 second time zone adjustment.
Then we’d be back in pre-railway era.
Actually every 463 meters.
40 075km is circumference of Earth. There are 24x60x60 seconds in a day.
40 075×1 000÷(24×60 ×60) =~ 463.8
Wouldn’t it depend on latitude? It would be much less than 463 metres at the latitudes of Europe
Yes, distance of 1" on equator (463.8 m) × cosine of latitude
longitude. This means approximately 350 m in Rome, 285,6 m in Berlin and 232 m in Helsinki. In reality a bit less, as I didn’t take the ellipsoid shape of the globe into account.