Merge pull request #4580 from shaedrich/patch-7

Create topic "DateTime"

topics/datetime/index.md

@@ -0,0 +1,13 @@
+---
+display_name: DateTime
+short_description: DateTime is the term used in programming when referring to date and time related topics.
+topic: datetime
+aliases: date-time
+related: date-formatting, daterange, timezones, intl, timestamp
+---
+**DateTime** is the term used in programming when referring to **date** and **time** related topics, which is a complex field, including
+* handling of [timezones](https://github.com/topics/timezones)
+* [localized](https://github.com/topics/localization) [date formatting](https://github.com/topics/date-formatting)
+* date arithmetic
+* different calendars (Gregorian, Julian, Chinese, Islamic, Hebrew, etc.)
+* universal storage format ([ISO 8601](https://github.com/topics/iso-8601), [timestamp](https://github.com/topics/timestamp)