Observatory log
São Paulo and Killarney, compared
- 01Difference now
Killarney is 4 hours ahead of São Paulo.
São Paulo: UTC−3 (UTC−3) · Killarney: IST (UTC+1)
Next changeFrom 25 October 2026: Killarney is 3 hours ahead of São Paulo.
- 02Through 2026–2027
- 1 January 2026 – 29 March 2026+3 h
- 29 March 2026 – 25 October 2026+4 h
- 25 October 2026 – 28 March 2027+3 h
- 28 March 2027 – 31 October 2027+4 h
- 31 October 2027 – 31 December 2027+3 h
Difference of Killarney from São Paulo. It changes on the days either place changes its clocks (dates local to that place).
- 03Shared working hours
- Mon–Fri: 09:00–13:00 in São Paulo = 13:00–17:00 in Killarney · 4 h
Counted as 09:00–17:00 local time on each place’s own working days, for the next seven days.
- 04Best time to meet
09:00–13:00 in São Paulo = 13:00–17:00 in Killarney
Inside both working days (Mon–Fri).
- 05Weekend
São Paulo: Saturday and Sunday
Killarney: Saturday and Sunday
24 hours
A day in São Paulo, in Killarney
| São Paulo | Killarney | Working hours, evening, night or weekend in each place |
|---|---|---|
| 00:00 | 04:00 | |
| 01:00 | 05:00 | |
| 02:00 | 06:00 | |
| 03:00 | 07:00 | |
| 04:00 | 08:00 | |
| 05:00 | 09:00 | |
| 06:00 | 10:00 | |
| 07:00 | 11:00 | |
| 08:00 | 12:00 | |
| 09:00 | 13:00 | |
| 10:00 | 14:00 | |
| 11:00 | 15:00 | |
| 12:00 | 16:00 | |
| 13:00 | 17:00 | |
| 14:00 | 18:00 | |
| 15:00 | 19:00 | |
| 16:00 | 20:00 | |
| 17:00 | 21:00 | |
| 18:00 | 22:00 | |
| 19:00 | 23:00 | |
| 20:00 | 00:00Tomorrow | |
| 21:00 | 01:00Tomorrow | |
| 22:00 | 02:00Tomorrow | |
| 23:00 | 03:00Tomorrow |
Working hoursEarly or eveningNightWeekend
Questions
Asked about São Paulo and Killarney
What is the time difference between São Paulo and Killarney?
Killarney is 4 hours ahead of São Paulo. This holds until 25 October 2026; then Killarney is 3 hours ahead of São Paulo.
What is the best time for a call between São Paulo and Killarney?
Inside both working days: Mon–Fri: 09:00–13:00 in São Paulo = 13:00–17:00 in Killarney · 4 h.
When does the time difference between São Paulo and Killarney change?
In the next 12 months it changes on: 25 October 2026 (+3 h); 28 March 2027 (+4 h).