ALT to GMT Time Converter

Convert Algeria Time (ALT) to Greenwich Mean Time (GMT). Both time zones are shown live below; current offset between them is same time.

Algiers · Algeria Time
22:07:31
Sunday, May 10, 2026
GMT+1 · UTC+01:00
London · Greenwich Mean Time
22:07:31
Sunday, May 10, 2026
GMT+1 · UTC+01:00

Convert a specific time

From: ALT (Algiers)
To: GMT (London)
--:--

Daylight Saving status right now

ALT (Algeria Time)
Observes DST
No
GMT (Greenwich Mean Time)
Observes DST
Yes
In DST right now
Yes
Next fall back
2026-10-25
Offset shift
UTC+01:00 → UTC+00:00

Heads up: GMT observes DST while ALT does not. The 0-hour difference shown above will shift by one hour when GMT starts or ends DST.

When can ALT and GMT meet?

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ALT
GMT
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in Algiers (ALT). Each row shows the local working-hours state in that zone for the same moment in time.
8 hours of overlap during standard 9am-5pm working hours.
Best meeting window: 09:00–16:00 ALT (09:00–16:00 GMT).

Hour-by-hour ALT to GMT conversion table

ALT time (Algiers)GMT time (London)Status
00:00 Sun00:00 SunOff-hours both sides
01:00 Sun01:00 SunOff-hours both sides
02:00 Sun02:00 SunOff-hours both sides
03:00 Sun03:00 SunOff-hours both sides
04:00 Sun04:00 SunOff-hours both sides
05:00 Sun05:00 SunOff-hours both sides
06:00 Sun06:00 SunOff-hours both sides
07:00 Sun07:00 SunOff-hours both sides
08:00 Sun08:00 SunOff-hours both sides
09:00 Sun09:00 SunBoth at work
10:00 Sun10:00 SunBoth at work
11:00 Sun11:00 SunBoth at work
12:00 Sun12:00 SunBoth at work
13:00 Sun13:00 SunBoth at work
14:00 Sun14:00 SunBoth at work
15:00 Sun15:00 SunBoth at work
16:00 Sun16:00 SunBoth at work
17:00 Sun17:00 SunOff-hours both sides
18:00 Sun18:00 SunOff-hours both sides
19:00 Sun19:00 SunOff-hours both sides
20:00 Sun20:00 SunOff-hours both sides
21:00 Sun21:00 SunOff-hours both sides
22:00 Sun22:00 SunOff-hours both sides
23:00 Sun23:00 SunOff-hours both sides

Times computed for today in each zone using the IANA time zone database. The conversion accounts for daylight saving time wherever applicable.

About these time zones

Algeria Time (ALT)
IANA identifier
Africa/Algiers
Current UTC offset
UTC+01:00
Current abbreviation
GMT+1
Major cities in this zone
Algiers
Greenwich Mean Time (GMT)
IANA identifier
Europe/London
Current UTC offset
UTC+01:00
Current abbreviation
GMT+1
Major cities in this zone
LondonManchesterEdinburghBirmingham

Sun today in Algiers and London

London
Sunrise
05:18
Sunset
20:38
Solar noon
12:58
Daylight
15h 20m

Related converters

GMT to ALT (reverse)ALT to ESTALT to PSTALT to UTCALT to CETALT to ISTEST to GMTPST to GMTUTC to GMTCET to GMTIST to GMT
Looking for local time? See time in Algiers or time in London.

Frequently asked questions

What is the time difference between ALT and GMT right now?+
GMT (Greenwich Mean Time) is currently same time ALT (Algeria Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does ALT or GMT observe daylight saving time?+
ALT: does not observe daylight saving time. GMT: observes daylight saving time.
When is the best time to schedule a meeting between ALT and GMT?+
The strongest overlap is 09:00–16:00 ALT (09:00–16:00 GMT), giving 8 hours when both sides are within standard 9am-5pm working hours.
What time is it in London when it is 12:00 noon in Algiers?+
When it is 12:00 Sun in Algiers (ALT), it is 12:00 Sun in London (GMT).
Which IANA time zone identifiers are used for ALT and GMT?+
ALT maps to "Africa/Algiers" in the IANA database. GMT maps to "Europe/London". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is Algiers ahead of or behind London?+
Whether Algiers (ALT) is ahead of or behind London (GMT) depends on the current UTC offsets. Right now GMT is same time ALT. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for ALT and GMT?+
ALT is UTC+01:00 (GMT+1) and GMT is UTC+01:00 (GMT+1). Both offsets shift by one hour when the corresponding region enters or exits daylight saving time, so the live values on this page are the source of truth.
Can I schedule meetings during business hours for both ALT and GMT?+
Yes. There are 8 hours of overlap during standard 9am-5pm working hours, with the strongest window at 09:00–16:00 ALT.