According to sources, the date and time difference is the same in each of the countries, although the current time difference remains the same. For example, let say the time difference between China and Russia is one hour, once the summer solstice happens in china, the same thing will happen in Russia an hour later. Generally speaking, the summer solstice happens twice a year.
This year summer solstice happened in the US on the 21st of June around 15:54; the December summer solstice is predicted to occur on the 22nd around 04:19. History has it that the summer solstice has been seen as one of the most significant times of the year, and it is marked by rituals, festivals, celebrations, and in some places, holiday. However, in most countries’ calendars, it is regarded as the beginning of summer.
The summer solstice is known to be the longest day of the year, and people look forward to this because they feel that this is a special day. A lot of people say that this is the start of abundance and happiness. In Manila, Philippines, this happened last June 21.
Take note that at different parts of the world, the solstice occurred at different times, but the fact remains that it was the day of the year when people usually feel that it is possible to get a new beginning. This astronomical event can be a sign of the start or the end of the season depending on the place where people are in.