和 ChatGPT 請教和糾錯

來源: baydad 於 2024-03-04 15:43:56 [檔案] [舊帖] [給我悄悄話] 本文已被閱讀：次 (1760 bytes)

現在很懶。有點要動腦的就叫ChatGPT幫忙。下麵是叫她幫我轉換一個時間。她告訴我有個夏令時問題。但算錯了：

what is the PST for this: 2024-03-26T20:00:00.000+00:00

ChatGPT
To convert the given timestamp from Coordinated Universal Time (UTC) to Pacific Standard Time (PST), you need to account for the time difference between UTC and PST and any potential daylight saving time changes. As of my last update in January 2022, Pacific Standard Time (PST) is 8 hours behind Coordinated Universal Time (UTC-8). However, during daylight saving time (which typically starts on the second Sunday in March and ends on the first Sunday in November), it becomes Pacific Daylight Time (PDT) and is 7 hours behind UTC (UTC-7).

Given the timestamp "2024-03-26T20:00:00.000+00:00", it's already in UTC format. To convert it to PST, you subtract 8 hours (since it's outside daylight saving time) from the given time:

20:00 UTC - 8 hours = 12:00 PST
So, the corresponding time in Pacific Standard Time (PST) for "2024-03-26T20:00:00.000+00:00" is 12:00 PM (noon) on March 26, 2024.
User
but the day is March 26, should it be 7 hours behind UTC instead?

ChatGPT
You are correct. My apologies for the oversight. As of my last update in January 2022, March 26th falls within Pacific Daylight Time (PDT), not Pacific Standard Time (PST). During daylight saving time, which typically starts on the second Sunday in March, Pacific Time is 7 hours behind Coordinated Universal Time (UTC-7), not 8 hours behind.