Tell me what day it is today.

1, when Arabic numerals indicate the date, it means that all the time in a day, that is, from the end time of the previous day (0: 00) to the start time of the next day (24: 00), is a complete day.

2. In Arabic numeral order, the numbers before 10 are: 9, 8, 7, 6. In the title here, it is three days later, and here is a complete three days, that is, nine, eight and seven days before the number 10, so three days later is July 10, and today should be 7.

Extended data:

I. Use of Arabic numerals:

1, physical value. The numerical values of physical quantities must use Arabic numerals, and the units of measurement after the numerals must use legal units of measurement in China, such as 3 kg, 45 m, 2 min, etc.

2. Century, year, year, month, day and time. Such as: 1990s, 2005, 65438+February, 12, 16, 15, etc.

3. The number before the counting unit. Numbers greater than 10 before the counting unit must use Arabic numerals, the integer 1~ 10, and Arabic numerals should be used where appropriate. Such as: 12 pencil, 4 tubes, 1 flower, etc.

4. The number of counts. Whether it is a chart or a narrative, the counted figures must be Arabic numerals, including integers, decimals, percentages, proportions, etc.

5, model, number, serial number, code, etc. Instrument model, sample number, standard number, etc. Often appear in scientific papers, Arabic numerals should be used, and the word "first" is often used before ordinal numbers. Such as: ML 1332 detector, GB 18745, group 8, etc.

Baidu Encyclopedia-Arabic numerals