Summer solstice or longest day of the year on June 21 —PAGASA

Filipinos and those living in countries in the northern hemisphere will experience the longest day on Wednesday, June 21, the summer solstice, PAGASA said.

"The June Solstice will be on 21 June at 10:58 p.m.," the weather bureau said in its astronomical diary.

The summer solstice means the day would be longer than the night, and is the day when the sun travels its longest path through the sky and reaches its highest point.

At 10:58 p.m. on Wednesday, "the Sun will reach its most northerly point in the sky in Taurus at a declination of 23.5°N.," PAGASA said.

"During the June Solstice, the northern hemisphere will experience the longest day and will mark the first day of summer. Subsequently, it will also mark the first day of winter in the southern hemisphere, wherein the Sun will have a shorter time staying above the horizon than any other day of the year," it added.

The change in the Earth's tilt causes daytime to be longer than nighttime during the summer solstice, according to a report by GMA Integrated News Weather Center's Anjo Pertierra on Unang Balita on Wednesday.

On June 21, daytime will reach almost 13 hours. The normal daytime is 12 hours.

In the next few days, the daytime hours will then start getting shorter while the nighttime will start getting longer. —KG, GMA Integrated News