In which country is the Asia/Calcutta timezone located?

The timezone Asia/Calcutta is mainly used in India .

What is the IANA identifier for this region?

The official IANA identifier is Asia/Calcutta . This code is used for time calculation in all common operating systems (Linux, Windows, macOS).

What is the time difference of Asia/Calcutta to UTC?

The current time difference for Asia/Calcutta is exactly UTC+05:30 .

Timezone

Asia/Calcutta

UTC +05:30 IST DST off

01:38:48

Wednesday, December 31, 2025 at 1:38:48 AM

Wk 1

Day 365/365

Unix 1767125328

Day progress

since 00:00 01:38:48 until 24:00 22:21:12

Current time in Asia/Calcutta

The details for Asia/Calcutta are as follows. Also available via the API in JSON or plain text.

Local Time

Current Local Date/Time (ISO8601): 2025-12-31T01:38:48+0530
RFC 3339: 2025-12-31T01:38:48+05:30
RFC 2822: Wed, 31 Dec 2025 01:38:48 +0530
Ordinal Day of the Week: 3
Ordinal Day of the Year: 365
Ordinal Week Number: 1
ISO week date: 2026-W01-3
Quarter: 4
Epoch (milliseconds): 1767125328585

Timezone Details

Timezone: Asia/Calcutta
Timezone Abbreviation: IST
ISO-3166-2: IN
Country Name: India
Other time zones using the abbreviation IST: Asia/Jerusalem, Asia/Kolkata, Asia/Tel Aviv and Israel

UTC

Current UTC Date/Time: 2025-12-30T20:08:48+0000
Local Time's UTC offset: +05:30
Display UTC offset: UTC+05:30
Local Time's UTC offset, in seconds: 19800
Unixtime: 1767125328

Daylight Saving Time (DST)

Current status: Standard Time (winter)
Last change: —
Next change: —
Current offset: UTC+05:30

Calendar and time metadata

Leap year: false
Next leap year: 2028
Days in year: 365

{
    "abbreviation": "IST",
    "datetime": "2025-12-31T01:38:48+0530",
    "day_of_week": 3,
    "day_of_year": 365,
    "week_number": 1,
    "iso_week_date": "2026-W01-3",
    "quarter": 4,
    "epoch_ms": 1767125328585,
    "has_dst": false,
    "is_dst": false,
    "dst_last": null,
    "dst_last_local": null,
    "dst_last_utc": null,
    "dst_next": null,
    "dst_next_local": null,
    "dst_next_utc": null,
    "dst_offset": 19800,
    "dst_from": null,
    "dst_until": null,
    "raw_offset": 19800,
    "timezone": "Asia\/Calcutta",
    "unixtime": 1767125328,
    "utc_datetime": "2025-12-30T20:08:48+0000",
    "utc_offset": "+05:30",
    "display_utc_offset": "UTC+05:30",
    "rfc3339": "2025-12-31T01:38:48+05:30",
    "rfc2822": "Wed, 31 Dec 2025 01:38:48 +0530",
    "is_leap_year": false,
    "next_leap_year": 2028,
    "next_leap_year_including_this_year": 2028,
    "days_in_year": 365
}

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abbreviation: 'IST'
datetime: '2025-12-31T01:38:48+0530'
day_of_week: 3
day_of_year: 365
week_number: 1
iso_week_date: '2026-W01-3'
quarter: 4
epoch_ms: 1767125328585
has_dst: false
is_dst: false
dst_last: NULL
dst_last_local: NULL
dst_last_utc: NULL
dst_next: NULL
dst_next_local: NULL
dst_next_utc: NULL
dst_offset: 19800
dst_from: NULL
dst_until: NULL
raw_offset: 19800
timezone: 'Asia/Calcutta'
unixtime: 1767125328
utc_datetime: '2025-12-30T20:08:48+0000'
utc_offset: '+05:30'
display_utc_offset: 'UTC+05:30'
rfc3339: '2025-12-31T01:38:48+05:30'
rfc2822: 'Wed, 31 Dec 2025 01:38:48 +0530'
is_leap_year: false
next_leap_year: 2028
next_leap_year_including_this_year: 2028
days_in_year: 365

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