curl --location --request GET 'https://app.asana.com/api/1.0/time_periods?workspace=31326'
{
"data": [
{
"gid": "12345",
"resource_type": "task",
"end_on": "2019-09-14",
"period": "Q1",
"start_on": "2019-09-13"
}
]
}