Boulder to Johannesburg time converter

Johannesburg is 8 hours ahead of Boulder. When it is 9:00 AM in Boulder, it is 5:00 PM in Johannesburg.

Boulder MDT

Tuesday, October 20, 2026

Johannesburg SAST

Tuesday, October 20, 2026

Boulder
Colorado, United States
Tue, Oct 20
MDTUTC-6
Johannesburg
South Africa
Tue, Oct 20
SASTUTC+2+8h
Finding your time zone…
Shared working hours (9:00–18:00)

Boulder to Johannesburg conversion table

Every hour of today in Boulder and the matching time in Johannesburg. Light rows are typical working hours (9:00–18:00).

BoulderJohannesburg
12:00 AM8:00 AM
1:00 AM9:00 AM
2:00 AM10:00 AM
3:00 AM11:00 AM
4:00 AM12:00 PM
5:00 AM1:00 PM
6:00 AM2:00 PM
7:00 AM3:00 PM
8:00 AM4:00 PM
9:00 AM5:00 PM
10:00 AM6:00 PM
11:00 AM7:00 PM
12:00 PM8:00 PM
1:00 PM9:00 PM
2:00 PM10:00 PM
3:00 PM11:00 PM
4:00 PM12:00 AM+1 day
5:00 PM1:00 AM+1 day
6:00 PM2:00 AM+1 day
7:00 PM3:00 AM+1 day
8:00 PM4:00 AM+1 day
9:00 PM5:00 AM+1 day
10:00 PM6:00 AM+1 day
11:00 PM7:00 AM+1 day

Best time to call or meet

Both sides are at work from 9:00 AM – 10:00 AM in Boulder (5:00 PM – 6:00 PM in Johannesburg).

Daylight saving time and the difference

The difference changes during the year because Boulder and Johannesburg switch clocks on different dates:

  • Oct 20, 2026 – Nov 1, 2026: +8h
  • Nov 1, 2026 – Mar 14, 2027: +9h
  • Mar 14, 2027 – Oct 20, 2027: +8h

Distance

Boulder and Johannesburg are 15,462 km (9,608 miles) apart in a straight line.

More conversions

Johannesburg to BoulderBoulder to New YorkBoulder to LondonBoulder to Los AngelesBoulder to ChicagoBoulder to TorontoBoulder to São PauloBoulder to ParisBoulder to BerlinBoulder to MoscowBoulder to DubaiBoulder to New DelhiBoulder to Bangkok
New York to JohannesburgLondon to JohannesburgLos Angeles to JohannesburgChicago to JohannesburgToronto to JohannesburgSão Paulo to JohannesburgParis to JohannesburgBerlin to JohannesburgMoscow to JohannesburgDubai to JohannesburgNew Delhi to JohannesburgBangkok to Johannesburg

Questions and answers

What is the time difference between Boulder and Johannesburg?

Johannesburg is 8 hours ahead of Boulder.

What time is it in Johannesburg when it is 9 AM in Boulder?

When it is 9:00 AM in Boulder, it is 5:00 PM in Johannesburg.

When is the best time to call Johannesburg from Boulder?

Both sides are at work from 9:00 AM – 10:00 AM in Boulder (5:00 PM – 6:00 PM in Johannesburg).

Does the time difference between Boulder and Johannesburg change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.