3 Answers

This explains it all:                                                       

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The position of the DST indicator is controlled by the city ring which indexes it to the appropriate color as you click through the link different time zones. The lever which indexes the GMT indication is shown above at 3-400 and its tip adjacent to the number 8 on the date ring rides along the inner edge of the city ring which has steps in it. If the reference city observes DST a higher link step corresponding to that city lifts the tip of the lever which moves the DST indicator to link red.

Sharma works in acrylic which he sometimes mixes with isopropyl alcohol "because one is probably hydrophobic one is probably hydrophilic it creates a really cool separation link and a super-rich pigment" that helps create his vibrant color palette. He is also really into science which shows not just in the mixing of pigment but the stories he's interested in telling link narratives about the climate link crisis figure large.