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INSTRUMENTS/Time← E10 · F02 →
F01

Time zones

One moment across several cities, with date rollover and DST flags, from the browser tz data.

WHAT IT WILL NOT DO

  • Years 100 to 275760 only; pre-1891 offsets in seconds cannot format back exactly.
  • The DST flag is inferred from January and July offsets, so zones that do not shift seasonally are mislabelled — read the offset column.
  • The change table scans 400 days ahead. Use F07 for shared meeting hours and F02 for working days.