Create getHoursDiffBetweenDates.md

snippets/getHoursDiffBetweenDates.md

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+---
+title: getHoursDiffBetweenDates
+tags: date,beginner
+---
+
+Calculates the difference (in hours) between two dates.
+
+- Subtract the two `Date` objects and divide by the number of milliseconds in an hour to get the difference (in hours) between them.
+
+```js
+const getHoursDiffBetweenDates = (dateInitial, dateFinal) =>
+  (dateFinal - dateInitial) / (1000 * 3600);
+```
+
+```js
+getHoursDiffBetweenDates(
+  new Date('2021-04-24 10:25:00'),
+  new Date('2021-04-25 10:25:00')
+); // 24
+```