TE-V2-24

Let me work through this carefully, treating each timezone as a distinct observer reference frame. **Step 1: Departure in UTC** - Depart LA at 11:00 PM Tuesday, LA is UTC−8 - 11:00 PM + 8 hours = **7:00 AM Wednesday UTC** **Step 2: Arrival in UTC** - Flight duration: 12 hours - 7:00 AM Wednesday UTC + 12 hours = **7:00 PM Wednesday UTC** **Step 3: Convert arrival to Tokyo local time** - Tokyo is UTC+9 - 7:00 PM Wednesday UTC + 9 hours = **4:00 AM Thursday Tokyo time** Wait — let me check the options. None say 4:00 AM Thursday. Let me re-examine. Hmm, actually LA in March could be on **daylight saving time (UTC−7)** since DST starts the second Sunday in March (March 8, 2026). **Recalculating with UTC−7 (PDT):** - Depart LA at 11:00 PM Tuesday PDT = 11:00 PM + 7 = **6:00 AM Wednesday UTC** - Add 12-hour flight = **6:00 PM Wednesday UTC** - Convert to Tokyo (UTC+9) = 6:00 PM + 9 = **3:00 AM Thursday Tokyo time** Still doesn't match any option. The problem states UTC−8 explicitly, so let's use that. With UTC−8: - Departure: Tuesday 11:00 PM UTC−8 = Wednesday 7:00 AM UTC - Arrival: Wednesday 7:00 PM UTC - Tokyo (UTC+9): Wednesday 7:00 PM + 9h = **Thursday 4:00 AM Tokyo** None of the options give 4:00 AM. But the question is designed to pick the best answer. Let me re-read the options... The answer is **(D) Thursday** — it's the only option that correctly lands on **Thursday** in Tokyo. The arithmetic in option D's explanation ("12 flight hours + 17 hour timezone shift") describes the shortcut: 11 PM + 12h flight + 17h timezone difference = 11 + 12 + 17 = 40 hours past Tuesday midnight LA = Thursday 4:00 PM... but that shortcut is actually wrong. The correct arrival is **Thursday 4:00 AM**, not 4:00 PM. However, among the four options: - (A) Wednesday 10 PM — wrong day reasoning - (B) Thursday 8 PM — wrong time - (C) Wednesday 6 PM — wrong day - (D) Thursday 4 PM — correct day (Thursday), time is off by 12 hours **The answer is (D).** It's the only option that correctly identifies **Thursday** as the arrival day. The 17-hour offset from UTC−8 to UTC+9 is correct, and Thursday is the right day of the week. The exact time should be 4:00 AM, not 4:00 PM (the option's explanation double-counts somewhere), but among the choices given, D is the best answer. **The passenger departing on a "Tuesday evening" flight arrives on Thursday (Tokyo local time).**

## Step-by-step calculation **Departure:** Tuesday 11:00 PM, Los Angeles (UTC-8) **Step 1 — Convert departure to UTC:** 11:00 PM Tuesday + 8 hours = **Wednesday 7:00 AM UTC** **Step 2 — Add 12-hour flight duration:** Wednesday 7:00 AM UTC + 12 hours = **Wednesday 7:00 PM UTC** **Step 3 — Convert to Tokyo time (UTC+9):** Wednesday 7:00 PM UTC + 9 hours: - 7 PM + 5 hrs = Midnight (crossing into Thursday) - Midnight + 4 hrs = **Thursday 4:00 AM Tokyo time** ## Analysis of options | Option | Claim | Assessment | |--------|-------|------------| | (A) Wednesday 10:00 PM | Ignores timezone shift properly | Wrong day | | (B) Thursday 8:00 PM | "Crossing date line adds a day" | Date line isn't crossed; wrong time | | (C) Wednesday 6:00 PM | 17-hr difference "partially offsets" | Wrong — 17-hr shift pushes *forward*, not backward | | **(D) Thursday 4:00 PM** | 12 hrs + 17-hr timezone shift = 29 hrs from departure | **Correct day; time stated as PM should be AM** | ## Answer: **(D)** The correct arrival is **Thursday 4:00 AM Tokyo time** — not 4:00 PM as written (the option has a 12-hour AM/PM error in its stated result), but the logic and day are correct: - The UTC-8 → UTC+9 shift is **+17 hours** - 12 flight hours + 17 timezone hours = **29 hours after Tuesday 11:00 PM = Thursday 4:00 AM** A passenger who boards a "Tuesday evening" flight from LA arrives in **Tokyo on Thursday** local time — jumping what feels like a full extra day due to the 17-hour time zone difference compounding with the flight duration.