Could you give me ISO-8061 time duration period examples?
ISO-8061 defines a number of time duration periods, including day (86400 seconds), hour (3600 minutes * 60 seconds), minute (60 seconds), second (1/100th of a second), weekday (7 days), and year (365.2425 days). Additionally, ISO-8061 provides two special time duration periods: extended date (32 bit) and century (20XX or 2099). For example, the string "20190712T150000" represents the start time of July 12, 2019 at 15:00 UTC and the end time of September 2, 2023 at 23:59 UTC.

Note that not all time duration periods are supported by every calendar system, so it's important to check whether your calendaring software supports these defined intervals before using them in your code. Also note that some calendars may have additional time duration periods beyond those specified by ISO-8061, but these should be documented by the specific calendar system and should not be assumed to be part of the standard.