Does the time difference between Dubai and Manila change during the year?

No. The gap stays at 4h all year.

When is the best time to call Manila from Dubai?

Between 09:00 and 13:00 in Dubai, which is 13:00 to 17:00 in Manila.

Dubai is 4h behind Manila. This gap is the same all year — neither city shifts its clocks relative to the other.

Dubai

United Arab Emirates

--:--:--

Manila

Philippines

--:--:--

A 9-to-5 day in each city overlaps for 4h. That is 09:00–13:00 in Dubai, which is 13:00–17:00 in Manila.

City	Time zone	UTC offset
Dubai · United Arab Emirates	Asia/Dubai	UTC+4
Manila · Philippines	Asia/Manila	UTC+8

What is the time difference between Dubai and Manila?: Dubai is 4h behind Manila. This gap is the same all year — neither city shifts its clocks relative to the other.
Does the time difference between Dubai and Manila change during the year?: No. The gap stays at 4h all year.
When is the best time to call Manila from Dubai?: Between 09:00 and 13:00 in Dubai, which is 13:00 to 17:00 in Manila.