Give a broad region and time window, then describe a measurable lag: when an event was saved on one device and when it appeared on another. Include platform and network type. Compare new events with edits if possible, because different operations may queue differently.
Do not expose event titles, locations, attendees, or meeting links. A delay on one account may be local or account-specific; check official incident updates and independent reports before describing it as regional. If sync eventually completes, include that recovery time. Such timestamps help identify a pattern without revealing private calendar data.
Akousa