Two abbreviation zones,
DST-accurate & shareable.
Pick source and target, set date and time — IANA-backed offsets and day-shift cues. Copy a URL anyone can reopen; matches every full pair page among 2,756 abbreviation routes.
Pick zones & datetime
Choose source and target abbreviations, then set the civil date and clock time you want to convert.
Check offset & day shift
The workspace shows live offset gap, whether DST is active, and if the result lands on a different calendar day.
Share or open a pair page
Copy the shareable URL, or jump to a full EST → IST style route with 24-hour tables and deadline shortcuts.
Set the source, use the answer.
Source deadline
time and date the client gave you
Timezone route
Swap the direction any time if you are checking from your side.
Google CalendarFrequently asked questions
How the converter works, DST accuracy, sharing URLs, and when to use pair pages, cities, or deadline shortcuts.
Pick a source abbreviation, target abbreviation, date, and time — the workspace shows the converted civil time, live offset gap, and whether either zone crosses midnight or observes DST on that date.