What time is the volt of 20 12?

Calculation method of digital voltage data

It is easy to calculate the cold on March 9 and the heat in three volts. The count of nine begins from winter to Sunday, and the number of volts on the solar calendar is easy to calculate, but it is difficult to calculate the number of volts on the solar calendar. Because according to the lunar calendar in China, it starts from the solstice in summer and starts counting volts on the third Geng day of the lunar calendar. At the same time, it is stipulated that the first Geng Day after beginning of autumn is the beginning of dog days. In this way, the intermediate period is sometimes ten days and sometimes twenty days. Generally speaking, there are about 45 days between the summer solstice and beginning of autumn. If there are four Geng days during this period, the middle period is ten days, and if there are five Geng days, the middle period is twenty days. This situation is due to the stipulation that the final crouch must begin after beginning of autumn.

Speaking of this, it is still difficult to solve the problem of when to start counting volts, because the general calendar does not indicate the method of recording days, so we don't know which day is Geng Day, so it is difficult to guess that the third Geng Day starts from the summer solstice. Here's a simple method. Because every ten days is a Geng Day, and a year (tropic year) is 365 days. Although it is not an integer multiple of the Geng Day cycle, it is also a half Geng Day cycle. In this way, it is easy to figure out which day is Geng Day. For example, July 2005 15 is Geng Day, so July 2006 10 must be Geng Day, and July 2007 15 will be Geng Day, and so on, isn't it easy to calculate Geng Day? We should pay attention to a problem here, that is, there are leap years in the Gregorian calendar, each leap year is 366 days, and 2008 happens to be a leap year, which is easy to handle. For example, in 2008, July 10 should be Geng Day, but there was an extra day in February this year. After counting this day, July 9 became Geng Day.

Under normal circumstances, the summer solstice falls on June 22, but the cycle of a tropical year is about 365 days plus 6 hours. Therefore, the summer solstice fluctuates around June 22, and generally fluctuates between June 21-June 23. No matter how the summer solstice fluctuates, the next year's days can only be advanced or postponed by 5 days (6 or 4 days in advance in leap years). The table below gives the dates for the next 40 years.

Starting Date of Several Volts from Summer to Daily in 2008; Starting Date of Last Volt of Autumn in Hitachi.

2010 June 21July19 June10 August 8.

2011June 22nd July14 August 20th/August 8th 13.

2012 June 21July18 June10 August 7.

2013 June 21July 13 20 days August 7 August 12

2014 June 21July 18 20 days August17 August 27th

2015 July 13 10 day July 23rd 20 days August 12 10 day

20 16 July 17 July 10 July 27 August16 July 10.

20 17 July 12 July 22nd August 2 1

2018 July 27th

2019 July12 July 22 August 2 1

July 26th August 25th, 2020

2021July11July 21August 20

July 26th August 25th, 2022

July 202311July 21August 20

July 202415 July 25th August 24th

July 20th, July 30th, August, 2025 19

July 202615 July 25th August 24th

July 20th, July 30th, August, 2027 19

July 202814 July 24 August 23

July 29, 20291August 9 18

July 203014 July 24 August 23

2031July19 July 29th August 18

July 23rd, 203213 August 22nd

July 28, 20331August 17

July 23rd, 203413 August 22nd

July 28, 20351August 17

July 2036 12 July 22 August 26 5438+0

July 27th, 203717 August 26th

July 22, 20381August 2 1

July 27, 203917 August 26

July 2, 20401day

2041July16 July 26th August 25th

July 2, 20421day, August 20, 2042

July 26th, 204316 August 25th, 2043

July 20th, July 30th, August, 2044 19

July 25, 204515 August 24, 2045

July 20th, July 30th, August, 2046 19

July 25, 204715 August 24, 2047

July 29, 204819 August 18

July 24, 204914 August 23

July 29, 20501August 9 18