How is date stored in Stata?
Stata stores numeric dates as the number of elapsed days since 01 Jan 1960 for date() and the number of elapsed milliseconds since 01 Jan 1960 00:00:00:000 for clock(). We obtained a readable date by using the format command with %td for daily dates, %tc for datetime, and %tm for monthly.
What date format is dd-mm-yyyy?
Date/Time Formats
| Format | Description |
|---|---|
| MM/DD/YY | Two-digit month, separator, two-digit day, separator, last two digits of year (example: 12/15/99) |
| YYYY/MM/DD | Four-digit year, separator, two-digit month, separator, two-digit day (example: 1999/12/15) |
How do I display dates and times numerically in Stata?
Stata stores dates and times numerically in one of the eight SIFs. An SIF might be 18,282 or even 1,579,619,730,000. Place the appropriate format on it, and the 18,282 is displayed as 20jan2010 (%td). The 1,579,619,730,000 is displayed as 20jan2010 15:15:30 (%tc).
What date format does Stata import data in?
Often data is imported into Stata with string format dates such as 10/09/1986 or 9oct1986. While useful for a human eye, a computer can’t glean much from data in this format.
What is Stata and how does it work?
While useful for a human eye, a computer can’t glean much from data in this format. Therefore, Stata offers tools to turn these date strings into values that, while still displaying sensical data to humans, are encoded in a numeric format that Stata likes. Moving from dates to Stata dates is a three step process.
What are the different datetime encodings in Stata?
Stata provides two separate datetime encodings that we call datetime/c and datetime/C and thatothers would call “times assuming 86,400 seconds per day” and “times adjusted for leap seconds”or, equivalently, Coordinated Universal Time (UTC). The syntax of the two functions is the same: