Tracks time by sending an employee identifier and a dateTime (format YYYY-MM-DDThh:mm:ss). Use userId, email or externalId (one required). Each call creates or updates attendance entries so that pairs (start/end) stay ordered.

Example (same day): T1 2021-01-01T08:00:00, T2 2021-01-01T09:00:00, T3 2021-01-01T10:00:00 → entries 08:00/09:00 and 10:00/open. A later T4 2021-01-01T12:00:00 closes the second pair as 10:00/12:00.

Overnight shifts (single entry): To close an overnight shift with one entry (e.g. started 22:00 day 1, clock-out 06:00 day 2):

1. First call: dateTime = start (e.g. 2026-02-03T22:00:00). This creates an open entry on that day.
2. Second call: dateTime = clock-out on the next calendar day (e.g. 2026-02-04T06:00:00) and isOvernightShift = true. The API closes the previous day's open entry with end time 06:00 next day (one overnight entry). You must send the actual next calendar day in dateTime (e.g. 04, not 03) so the system finds the open entry on the previous day. The clock-out time can be from 00:00 up to 18:00 inclusive on the next day; within that range, the previous day's open entry is closed. If you send a time after 18:00 (e.g. 18:01 or 12:00 next day), the punch is treated as a new entry on the current day instead of closing the overnight.