Keeping 09:00 on the PT clock produces 2 different destination clock/date answers in 2026. The ranges below use PT calendar dates, including transition days.
Lagos17:00Same date238 of 365 source datesLagos18:00Same date127 of 365 source dates
Dates in PT · 2026
Lagos answer
Source → destination offsets
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Jan 1 – Mar 766 dates
18:00Same date
UTC−08:00 → UTC+01:00
Mar 8 – Oct 31238 dates
17:00Same date
UTC−07:00 → UTC+01:00
Nov 1 – Dec 3161 dates
18:00Same date
UTC−08:00 → UTC+01:00
Every calendar date is included, not just workdays. Date ranges include both endpoints. Based on IANA 2026e; future rules may change.
DON’T LOSE A DAY
When does PT time become a different date in Lagos?
Your complete source day: 2026-11-10. Each range shows which destination date to use.
00:00 · Same date15:00 · Next day
PT · 2026-11-1000:00–15:00UTC−08:00
→
Lagos · 2026-11-1009:00–24:00UTC+01:00 Same date
PT · 2026-11-1015:00–24:00UTC−08:00
→
Lagos · 2026-11-1100:00–09:00UTC+01:00 Next day
Range starts are included; ends are excluded. 24:00 means midnight at the end of that date. Repeated hours appear separately with their UTC offsets. The strip is proportional to elapsed time.
THE BIGGER PICTURE
A year of time differences.
How Lagos compares with PT throughout 2026.
2026
JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
+9h
+8h
+9h
PT changes its UTC offset in 2026. Lagos keeps one UTC offset this year.
One fixed start time does not fit every working day.
Your working windows never overlap on the selected host workdays this year. Adjust working days, hours or duration above, or use different seasonal meeting times.
Overnight shifts belong to their start weekday. Host workday means the source calendar date. Repeated local times use the first occurrence.
THE DETAILS THAT MATTER
PT to Lagos: useful answers
Why is the PT to Lagos difference sometimes 8 hours and sometimes 9 hours?
PT is 8h or 9h behind Lagos in 2026, depending on the date. PT changes its UTC offset in 2026. Lagos keeps one UTC offset this year.
Does the PT–Lagos time difference change in 2026?
The published rules produce 3 periods with 2 different offsets in 2026. See the annual chart for the exact boundaries of each period.
Does this conversion change the calendar date?
09:00 in PT on 2026-11-10 is 18:00 in Lagos on 2026-11-10. This selected time stays on the same date in both places. Other times can cross midnight.
Can PT and Lagos meet during working hours?
Your selected working windows have no shared time on 2026-11-10. The planner shows alternatives and how many minutes fall outside each person's working hours. Try another date or adjust the windows.