What is the correct way to express 2:45 AM PST on the 24th in a standardized format?

The correct representation of 2:45 AM Pacific Standard Time (PST) in a standardized format involves using both the time and the specific time zone. In aviation and related fields, the time is often specified in a 24-hour clock system, and using a lowercase "p" indicates that the time provided is in PM, specifically for PST which is UTC-8 hours.

The option indicating 240245 p clearly states that the time is at 2:45 AM in a 24-hour format (where 240245 denotes the 24th day at 02 hours and 45 minutes) and adds the necessary context of "p" for PM. This designation helps eliminate ambiguity about whether the time is in the morning or evening.

The other options either provide an incorrect designation or do not accurately convey that the time is specific to PST. For example, using "Z" would suggest Zulu time (UTC), which does not account for local time zones. Similarly, using "E" or just adding "PST" does not align with the commonly accepted conventions for denoting the specific AM/PM context in the time reporting format.