Script that counts down every 10-15 minutes +1 #83

A counter that increases by +1 every 10 minutes.
The counter is not reset every time you visit the site and counts constantly, even when the site is closed. The counter can be used to display any text on the site page, for example:

We sent so many packages.
or
We have completed so many orders.

======== How the counter works
In the settings, you need to set the date in the past from which the orders will start counting and specify the counting interval, for example, every 10 minutes.
When you visit the site, the script will calculate how many such time intervals have passed before the current date and output the value.
Also on the already opened page, the value will change in real time without reloading.
It is possible to simultaneously display the counter in several places on the page.
It is possible to display several independent counters on the same page with their own settings and counting time.

= = = = = = = = = Settings.
- the name of the HTML tag class for displaying the counter in the code.
- the start date of the "Year-Month-Day" countdown.
- counting interval in minutes, for example, every 10 minutes.

= = = = = = = = Uses
html, javascript