Function getTimezoneAbbreviation

apps/sim/lib/workflows/schedules/utils.ts:484–498

* Helper function to get a friendly timezone abbreviation. * Uses Intl.DateTimeFormat to get the correct abbreviation for the current time, * automatically handling DST transitions.

(timezone: string)

 * automatically handling DST transitions.
 */
function getTimezoneAbbreviation(timezone: string): string {
  if (timezone === 'UTC') return 'UTC'

  try {
    const formatter = new Intl.DateTimeFormat('en-US', {
      timeZone: timezone,
      timeZoneName: 'short',
    })
    const parts = formatter.formatToParts(new Date())
    const tzPart = parts.find((p) => p.type === 'timeZoneName')
    return tzPart?.value || timezone
  } catch {
    return timezone
  }
}

/**
 * Converts a cron expression to a human-readable string format