Today's Choghadiya for Sydney — the eight day and eight night periods (Amrit, Shubh, Labh, Char and the inauspicious ones), to pick an auspicious muhurat in your local time.
The day gets eight Choghadiya periods and the night another eight, each an equal division of Sydney's sunrise-to-sunset and sunset-to-sunrise spans. Their order rotates with the weekday, and because the two spans are rarely equal, a daytime period here is usually a different length from a night one on the same date.
Sydney runs on Australia/Sydney, not IST, so an Indian panchang does not transfer here directly. At 151.21°E the Sun peaks about 5 minutes earlier than the standard-time clock reads. Every timing on this page is computed from Sydney's own sunrise and sunset.
Sydney sits at 33.87°S. Daylight here runs to about 14h 15m at its longest and about 9h 45m at its shortest — a swing of roughly 4h 31m across the year. Because the eight daytime Choghadiya periods are made by dividing sunrise-to-sunset into eight equal parts, each period in Sydney is noticeably longer in summer than in winter. Rahu Kaal, being one-eighth of the day, moves the same way.
Timings are computed for 33.87°S, 151.21°E (Australia/Sydney) with the Swiss Ephemeris: the day's exact sunrise and sunset first, then Rahu Kaal, the Choghadiya periods and the panchang limbs derived from them. Nothing is approximated from a nearby larger city.
No. Sydney is on Australia/Sydney while an Indian panchang publishes everything in IST, so the timings have to be recomputed against local sunrise here.
Because it is not a fixed clock time — it is one-eighth of the daylight span, measured from that morning's sunrise. Daylight in Sydney varies by about 4h 31m across the year, so both the start time and the length of Rahu Kaal move with it.
No. Rahu Kaal, Choghadiya and the panchang are properties of place and date — identical for everyone in Sydney on a given day. A muhurat chosen against your own chart is a separate question and needs your birth details.