The day will last for 13 hours and 48 minutes.

The summer solstice occurs every June 21 in most years. This year, however, the summer solstice will be on June 20 for most countries in the world at 20:51 UTC, which is the earliest solstice since 1796. For the UAE, the longest day of the year will still be on June 21, reported Khaleej Times.

Ibrahim Al Jarwan, Chairman of the Board of Directors of the Emirates Astronomy Society and member of the Arab Union for Astronomy and Space Sciences told the newspaper: " With the date of the summer solstice, the sun is perpendicular to the Tropic of Cancer at its northernmost position... while the shadow is absent at noon in the perpendicular areas, including the southern regions of the country, and the meridian shadow disappears. Throughout the Arabian Peninsula, the shortest meridian shadow is throughout the northern half of the Earth."

The chairman said on the day of summer solstice the day temperature may range between  41ºC and 43º and it may vary between  26ºC and 29ºat night.