What's the date of July 20 15? How to write hard pen calligraphy?

It depends on the lunar calendar. For example, this year is the last year of B, and today belongs to June of the lunar calendar. Calligraphy can be written like this: one is written in the end of B, the end of summer or the end of B, the end of summer.

Lunar month is another reference name.

January: the first month, the second month, the month of Meng, the end of the month, beginning of spring and beginning of spring;

February: such as the moon, apricot moon, mid-spring and early spring;

March: Sick Month, Peach Month, Ji Chun, Bingyue, Sanchun, Yangchun and Late Spring;

April: Yuyue, Qinghe, Taoyue and Xia Meng;

May: durian month, thin month and midsummer;

June: and month, lotus month, Xia Yue, late summer month;

July: Meet, Qiao Yue, Shuangyue, Qiu Meng and the same month;

August: Zhuangyue, Gui Yue, Mid-Autumn Festival, Mid-Autumn Festival;

September: autumn, auspicious sea and moon, gathering the moon;

October: Yangyue, Xiaoyangchun and Germination;

November: Gu Yue, Jiayue and Midwinter;

December: Tuyue, Twelfth Moon, Jiapingyue and Jidong.