Live offset · Year-round DST · Shareable URL

Time difference
Mumbai and Boston

Live clocks (IST ↔ EST), the current gap, month-by-month offset changes, and a full 24-hour map from Mumbai to Boston.

1

Live gap

See the current offset between Mumbai and Boston, with IANA-backed clocks updating every second.

2

Year-round chart

DST can shift the gap by an hour twice a year—the 2026 month table shows every change.

3

Hour-by-hour

Scroll the 24-hour table to map any civil hour in Mumbai into Boston with day-shift cues.

Time difference workspace

How Mumbai and Boston line up today.

2 cities · live offsetGap shifts yearly
City pair

Mumbai Boston

Boston is 9.5h behind Mumbai at this moment. Compare live clocks, seasonal DST shifts, and hour-by-hour conversions below.

Live offsetIANA zones · updates automatically
Mumbai
Asia/Kolkata
ZoneIST
Offset nowUTC+5:30
Hour gap
−9:30

BostonMumbai

Boston
America/New_York
ZoneEST / EDT
Offset nowUTC-4
About this pairUseful when planning calls or docs

Time difference between Mumbai and Boston: Boston is currently 10.5 hours behind Mumbai.

This difference is not constant: in winter Mumbai is 10.5 hours ahead of Boston, while in summer (when one or both observe DST) the gap shifts to 9.5 hours ahead of. The monthly table below shows the exact offset gap month by month. For practical scheduling, jump to the best-time-to-meet page or the 24-hour conversion table below.

Jump aheadPick the view you need next
Best time to meetMonthly offsets24-hour table
Live clocks workspace

Clocks side by side.

Updates every second
Right nowAsia/Kolkata · America/New_York
Mumbai
Asia/Kolkata
Live time
--:--
OffsetUTC+5:30
AbbreviationIST
No DST
Boston
America/New_York
Live time
--:--
OffsetUTC-4
AbbreviationEST / EDT
Observes DST
Relationship

Boston is 9.5h behind Mumbai.

DST rules can widen or shrink this gap for a few weeks each spring and autumn—the month table below shows how many hours Boston sits ahead of or behind Mumbai through the calendar year.

Next stepsPlan overlap or convert zones
Best time to meet →IST → EST →Overlap Finder →
Year-round

Offset changes by month

Sampled mid-month for 2026. Compares Boston versus Mumbai; a value of +3h means Boston is three hours ahead of Mumbai.

2026 calendar

Month-by-month gap

MonthDifference (Boston vs Mumbai)
January-10.5h
February-10.5h
March-9.5h
April-9.5h
May-9.5h
June-9.5h
July-9.5h
August-9.5h
September-9.5h
October-9.5h
November-10.5h
December-10.5h
Hour by hour

24-hour conversion table

Every civil hour in Mumbai mapped into Boston; day-shift cues follow active DST for both zones today.

MumbaiBoston

Hourly wall-clock map for today — midnight crossings show as day shifts.

Mumbai with part-of-day icon
Boston arrow and converted time
Day
  • 00:00
    14:30
    Prev day
  • 01:00
    15:30
    Prev day
  • 02:00
    16:30
    Prev day
  • 03:00
    17:30
    Prev day
  • 04:00
    18:30
    Prev day
  • 05:00
    19:30
    Prev day
  • 06:00
    20:30
    Prev day
  • 07:00
    21:30
    Prev day
  • 08:00
    22:30
    Prev day
  • 09:00
    23:30
    Prev day
  • 10:00
    00:30
    Same day
  • 11:00
    01:30
    Same day
  • 12:00
    02:30
    Same day
  • 13:00
    03:30
    Same day
  • 14:00
    04:30
    Same day
  • 15:00
    05:30
    Same day
  • 16:00
    06:30
    Same day
  • 17:00
    07:30
    Same day
  • 18:00
    08:30
    Same day
  • 19:00
    09:30
    Same day
  • 20:00
    10:30
    Same day
  • 21:00
    11:30
    Same day
  • 22:00
    12:30
    Same day
  • 23:00
    13:30
    Same day
Uses your browser's IANA zone data — choose another date in the converter for historical or future days.
Keep exploring

Related pages

More time-difference routes, pairwise best times, triple-city overlaps, and conversions tied to Mumbai, Boston, or this corridor.

FAQ

Frequently asked questions

Offsets between Mumbai and Boston, DST shifts, scheduling, and how we source timezone data—plus how to share this page.

Currently, Boston is 9.5h behind Mumbai. This may change through the year if either city observes Daylight Saving Time.