🇯🇵VS🇺🇸
🌐Time Difference Calculator
KosaivsShanghai
🇯🇵Kosai
12:10:48
AM
Tuesday, April 28, 2026
+13h
Kosai ahead
🇺🇸Shanghai
11:10:48
AM
Monday, April 27, 2026
Time ConverterKosai ↔ Shanghai
Click any row to convert — browse 2000–2050 with the arrows
| 📍Your Local Time detecting… | 🇯🇵 Kosai UTC+09:00 | 🇺🇸 Shanghai UTC-04:00 |
|---|
24-Hour OverviewKosai vs Shanghai
12a 4a 8a 12p 4p 8p 12a
🇯🇵KosaiBase
12:10 AM
🇺🇸Shanghai +-13h
11:10 AM
Work hours (9–5) Current time
Best Meeting HoursKosai & Shanghai
12am
11am
★
1am
12pm
2am
1pm
3am
2pm
4am
3pm
5am
4pm
6am
5pm
7am
6pm
8am
7pm
9am
8pm
10am
9pm
11am
10pm
12pm
11pm
1pm
12am
2pm
1am
3pm
2am
4pm
3am
5pm
4am
6pm
5am
7pm
6am
8pm
7am
9pm
8am
10pm
9am
11pm
10am
⚠
No standard business hours overlap
The +13h difference makes scheduling difficult. Consider the ★ suggested windows below.
🌅 Early Window
12:00 AMKosai=11:00 AMShanghai
★ Suggested window Kosai workingShanghai working
April 2026 — Time DifferenceKosai vs Shanghai
+13hConstant this month
No DST transitions in April 2026•Applies to all 30 days
Quick Reference — Kosai → Shanghai
| 🇯🇵 Kosai (UTC+09:00) | 🇺🇸 Shanghai (UTC-04:00) |
|---|---|
| 12:00 AM | 11:00 AM (prev day) |
| 6:00 AM | 5:00 PM (prev day) |
| 8:00 AM | 7:00 PM (prev day) |
| 9:00 AM | 8:00 PM (prev day) |
| 10:00 AM | 9:00 PM (prev day) |
| 12:00 PM | 11:00 PM (prev day) |
| 2:00 PM | 1:00 AM |
| 5:00 PM | 4:00 AM |
| 6:00 PM | 5:00 AM |
| 8:00 PM | 7:00 AM |
| 10:00 PM | 9:00 AM |
🇯🇵
Kosai business hours
= 8:00 PM (prev day) – 4:00 AM in Shanghai
🇺🇸
Shanghai business hours
= 10:00 PM – 6:00 AM (next day) in Kosai
⇄
Midpoint meeting
1:00 PM in Kosai = 12:00 AM in Shanghai
More Tools
Related pages for Kosai and Shanghai
Location DetailsKosai vs Shanghai
👥 Population
59,770 approx.
vs
24,870,895 approx.
💵 Currency
Japanese Yen (¥)
vs
US Dollar ($)
🗣️ Language
Japanese
vs
English, Spanish
📞 Calling Code
+81
vs
+1
📅 Weekend
Saturday,Sunday
=
Saturday,Sunday
🕐 Time Format
24H
vs
12H
When to CallEnter a time in Kosai — see what it is in Shanghai
:
→
9:00 AM
Both cities in business hours — good time to call!
Quick pick:
Frequently Asked QuestionsKosai & Shanghai — Time Difference
Kosai is 13h ahead of Shanghai. Kosai uses Asia/Tokyo (UTCUTC+09:00), Shanghai uses America/New_York (UTCUTC-04:00).
When it is 12:00 PM in Kosai, it is 11:00 PM in Shanghai.
Not ideal right now. It is 12:10 AM in Kosai and 11:10 AM in Shanghai. Kosai is outside business hours.
Neither Kosai nor Shanghai is currently observing Daylight Saving Time.
It is currently Tuesday in Kosai but Monday in Shanghai due to the timezone difference.
When it is 9:00 AM in Kosai, it is 8:00 PM in Shanghai.
Compare with Other Cities
See how Kosai and Shanghai differ from major world cities