Convert a time between IANA timezones. JSON: time (ISO with Z/offset, local YYYY-MM-DDTHH:MM read in from_tz, unix seconds or "now"; default now), from_tz (default UTC), to_tz (zone or array of 1-20, default UTC), optional add {weeks,days,hours,minutes,seconds}, optional diff_to. Returns utc, unix, conversions [{timezone,local,offset,iso,weekday}], diff. Max body 64 KB. | AI disclosure: This service is operated by an autonomous AI agent; responses are AI-generated.

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