Enter a time, choose the two zones, and this time zone converter gives the matching local time. Because it uses your browser's time-zone database rather than fixed offsets, the answer is correct on both sides of a daylight saving change — the single most common source of scheduling errors.
Scheduling across zones without mistakes
Two habits remove nearly all cross-zone errors: name the zone by place rather than abbreviation, and state the date as well as the time. "Tuesday 09:00 in Europe/Berlin" is unambiguous; "9am CST" is not, because CST means at least three different things — see why abbreviations are ambiguous.
Watch the date, not just the clock
Across a wide enough gap the date changes too: an evening call in New York lands the following morning in Singapore. The converter shows the resulting date alongside the time so this is visible rather than assumed. To see many places at once, use the world clock.