DD.MM.YYYY = 13.06.2026
Numbers only, leading zeroes for days and months.
ISO 8601 (YYYY-MM-DD or YYYYMMDD) would be preferred, but is not established. The American MM/DD/YYYY is rejected and strongly discouraged.

HH:MM or HH:MM:SS = 22:07 or 22:07:57
24 hours with leading zeroes, typically without seconds.

When talking to Americans, h:mmAM/PM = eg. 7PM, 7:52PM, 11:05AM
Short hour without leading zeroes with short minutes, omitted on full hour, with AM/PM marker appended without space, both letters capitalized and no points (ie. not a.m.).
May be used for its colloquiality in some other informal settings.
HH:MM:SS AM/PM (= 05:30:21 PM) used as long format. Leading zeroes, AM/PM capitalized with space but still no points.

American English = Democratization
Per case basis, in most cases American is preferred, though some exceptions (laser, not lazer) exist. In many technical contexts British English is preferred.

Non-Standard Clarifying Letters
eg. Zeroes (not zeros), Consentual (not consensual), Preferred (not prefered); attempts to eliminate some special rules where appropriate for consistency.