World Timezones

Riyadh to Surabaya Converter

Compare Surabaya to Riyadh instead
Riyadh5:44 amMon, Jun 8
RiyadhAST
Saudi Arabia · UTC+3
5:44 amMon, Jun 8
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
SurabayaWIB
Indonesia · UTC+7
9:44 amMon, Jun 8
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
12a
1a
2a
3a

Offset

The time difference between Riyadh and Surabaya is 4 hours.

4 hours

Riyadh (AST) is behind Surabaya (WIB).

AST: UTC+3

WIB: UTC+7

Neither Riyadh nor Surabaya is currently observing daylight saving time.

When to schedule

Business-hours overlap: 9 AM–1 PM in Riyadh (1 PM–5 PM in Surabaya).

Both teams are in working hours during this window on weekdays.

Suggested time: 11:00 AM Riyadh (3:00 PM Surabaya).

Note: the working week in Saudi Arabia runs Sunday–Thursday; Friday–Saturday is the weekend, so overlap on those days is limited.

Public holidays in 2026

National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.

Indonesia

  • New Year's DayThu, Jan 1
  • Good FridayFri, Apr 3
  • Easter SundaySun, Apr 5
  • Labour DayFri, May 1
  • Ascension DayThu, May 14
  • Pancasila DayMon, Jun 1
  • Independence DayMon, Aug 17
  • Christmas DayFri, Dec 25

About these zones

Riyadh uses Arabia Standard Time (AST). To call Saudi Arabia, dial +966.

Surabaya uses Western Indonesia Time (WIB). To call Indonesia, dial +62.

Surabaya is approximately 4,950 miles east of Riyadh.

Quick reference

Full 24-hour conversion table — tap any time to open it in the converter.

RiyadhSurabayaDay
12:00 am4:00 amSame day
1:00 am5:00 amSame day
2:00 am6:00 amSame day
3:00 am7:00 amSame day
4:00 am8:00 amSame day
5:00 am9:00 amSame day
6:00 am10:00 amSame day
7:00 am11:00 amSame day
8:00 am12:00 pmSame day
9:00 am1:00 pmSame day
10:00 am2:00 pmSame day
11:00 am3:00 pmSame day
12:00 pm4:00 pmSame day
1:00 pm5:00 pmSame day
2:00 pm6:00 pmSame day
3:00 pm7:00 pmSame day
4:00 pm8:00 pmSame day
5:00 pm9:00 pmSame day
6:00 pm10:00 pmSame day
7:00 pm11:00 pmSame day
8:00 pm12:00 am+1 day
9:00 pm1:00 am+1 day
10:00 pm2:00 am+1 day
11:00 pm3:00 am+1 day

Daylight saving time

Neither Riyadh nor Surabaya observes daylight saving time. The offset between these zones remains constant year-round.

See the daylight saving time page for transition dates across every time zone.

Daylight today

Riyadh
Sunrise
5:04 AM
Sunset
6:42 PM
Day length
13h 37m
Surabaya
Sunrise
5:37 AM
Sunset
5:20 PM
Day length
11h 43m

Daylight overlap: 8h 16m — 5:04 AM–1:20 PM in Riyadh (9:04 AM–5:20 PM in Surabaya). Both locations are in daylight during this window.

Cities in these zones

Other cities in Arabia Standard Time

Browse all cities to see the current local time anywhere.

Airports in these zones

Airports in Arabia Standard Time

  • JED
  • RUH
  • MED
  • DMM

Airports in Western Indonesia Time

  • CGK
  • HLP
  • SUB
  • BDO
  • KNO
  • PLM
  • SRG

Related conversions

Common conversions

What is 9:00 am Riyadh in Surabaya?
9:00 am Riyadh is 1:00 pm Surabaya.
What is 12:00 pm Riyadh in Surabaya?
12:00 pm Riyadh is 4:00 pm Surabaya.
What is 12:30 pm Riyadh in Surabaya?
12:30 pm Riyadh is 4:30 pm Surabaya.
What is 2:00 pm Riyadh in Surabaya?
2:00 pm Riyadh is 6:00 pm Surabaya.
What is 5:00 pm Riyadh in Surabaya?
5:00 pm Riyadh is 9:00 pm Surabaya.
What is 11:30 pm Riyadh in Surabaya?
11:30 pm Riyadh is 3:30 am Surabaya, the next day.