Test As an admin, go to Site administration and search for " enablemobilewebservice ". Enable web services for mobile devices and save the changes Go to Site administration / Development / Experimental / Experimental settings and Enable course relative dates. Save the changes. Create a new course and set the setting "Relative dates mode" to yes Create a choice activity enabling the fields: Availability -> Allow responses from/until (you can use any future date) Create a forum activity enabling the field: Availability -> Due date (you can use any future date Create an Assignment activity enabling the fields: Availability -> Allow submissions from and Due date (you can use any future date) Enrol one user as Teacher Go to Site administration / Server / Web services / Manage tokens Create a Token in the mobile app service for the previous user (the teacher) Click on Site administration ► Plugins ► Web services ► Manage tokens Open the console and execute this new curl request, replacing WS_TOKEN with the token you just created and the SITE_URL with yours. Also replace COURSE_ID with the id of the course you created in the previous steps curl 'SITE_URL/webservice/rest/server.php?moodlewsrestformat=json&wsfunction=core_course_get_contents' --data-raw 'courseid=COURSE_ID&wstoken=WS_TOKEN&moodlewssettingfilter=true&moodlewssettingfileurl=true&moodlewssettinglang=en&wsfunction=core_course_get_contents' | python -m "json.tool" Confirm that: In the curl request response you see the following: For the Choice activity, a "dates" structure containing fields in which dataid is set to timeopen and timeclose For the Forum activity, a "dates" structure containing a field in which dataid is set to duedata For the Assignment activity, a "dates" structure containing fields in which dataid is set to allowsubmissionsfromdate, duedate and relativeto