Moodle plugins directory: EJSApp Booking System | Moodle.org
EJSApp Booking System
Activities ::: mod_ejsappbooking
Maintained by 
Ruben Heradio, 
Luis de la Torre
Part of set EJSApp and extensions.
This plugin lets you add a javascript-based booking system to handle the connections to the remote laboratories developed using EjsS and added to your Moodle courses by means of the ejsapp plugin.
Latest release:
24 sites
6 downloads
14 fans
Current versions available: 1
EJSApp
EJSApp is a module that supports the deployment of EjsS applications, that usually correspond to virtual and/or remote labs, into Moodle.
EJSApp Booking System
EJSApp Booking System enriches the EJSApp module by providing a javascript-based booking system to schedule and control the access to the physical resources used by the remote labs and which can only be used by one person at the same time.
Tutorial Video
If you like this plugin, please support its development: https://www.paypal.me/ejsapp
Useful links
Screenshots
Contributors
Ruben Heradio (Lead maintainer)
Luis de la Torre: Author
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Comments 
Comments
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I can think on two reasons:
1. Have you checked your php server time is correct?
2. Are you accesing the Booking System from a different time zone than the one the Moodle server is? If so, the booking system might behave wrong. I haven't yet implemented support for different time zones.