Single

An active date 2024-01-15 and an inactive one 2024-01-15.

With a time: 2024-01-15 10:30.

Ranges

A same-day time range 2024-01-15 10:00–11:45.

A multi-day range 2024-01-15–2024-01-20.

Ignored decorations

A repeater is dropped: 2024-01-15.

Not timestamps

Comparisons like 3 < 4 and [not a stamp] stay literal text.