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Its format is the one the Jira instance has set in Look and field “Complete Date/Time Format”:
Duration fields
Duration fields, such as "time spent", "aggregate time spent", "time estimate", "aggregate time estimate", "time original estimate", "aggregate time original estimate":
Format: the one the Jira instance has set on Time tracking “Time tracking format”:
They are calculated based on Jira setting in “Working hours per day” and “Working days per week”
Transitions area - duration fields
"Time in final status" and "Time in initial status":
Format: the one the Jira instance has set on Time tracking “Time tracking display format”:
They are calculated in real hours, not working hours. For example:
3 days = 72 real hours, even if there are only 24 working hours.
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