## How do you calculate days between two timestamps?

Calculate the no. of days between two dates, divide the time difference of both the dates by no. of milliseconds in a day (1000*60*60*24)

### How do you subtract two dates in SAS?

In general, the difference between two SAS dates in days can most easily be calculated as duration=end_date – start_date.

**What is inrange in Stata?**

That answered by inrange() is whether a specified argument falls in a specified range. The examples here are typical of a good way to use inlist() or inrange(): move directly from feeding arguments to each function to using the results of the calculation.

**How do you calculate days between two dates in PHP?**

php $date1 = “2016-07-31”; $date2 = “2016-08-05”; function dateDiff($date1, $date2) { $date1_ts = strtotime($date1); $date2_ts = strtotime($date2); $diff = $date2_ts – $date1_ts; return round($diff / 86400); } $dateDiff = dateDiff($date1, $date2); printf(“Difference between in two dates : ” .

## What is Strpos in Stata?

Description. strpos(haystack, needle) returns the location of the first occurrence of needle in haystack or 0 if needle does not occur.

### What does inrange mean?

If something is in range or within range, it is near enough to be reached or detected. If it is out of range, it is too far away to be reached or detected.

**What is the best way to write dates in Stata?**

Stata can work with dates such as 21nov2006, with times such as 13:42:02.213, and with dates and times such as 21nov2006 13:42:02.213. You can write these dates and times however you wish, such as 11/21/2006, November 21, 2006, and 1:42 p.m.

**How does Stata calculate time between events?**

By putting everything into milliseconds, Stata can meaningfully subtract or add dates and times to calculate elapsed time between events.

## What is the origin of the day in Stata?

For times, Stata uses 00:00:00:00 as the origin of the day and once more proceeds to calculate milliseconds since then when given a time such as 1:26 p.m. By putting everything into milliseconds, Stata can meaningfully subtract or add dates and times to calculate elapsed time between events.

### How does Stata read 12-hour clock?

However, if you are on a 12-hour clock without using correct notation, Stata will interpret it as the 24-hour clock (e.g., 2:34 will be read as 02:34). Stata can also read full dates, dates with slashes, and dates with dashes.