caldays
Meeting planner

Find the best meeting time across time zones.

Schedule meetings across multiple cities without the math. Add up to 6 cities, set business hours, and instantly see which UTC hours work for everyone. Plus a 24-hour timeline view.

New York (EST)
London (GMT)
Tokyo (JST)
Sydney (AEST)
Business hours:to(e.g. 9-18 = 9 AM - 6 PM)
⚠ No overlap in business hours
Try expanding business hours, or some cities will need to take an early/late call.
UTCNew YorkLondonTokyoSydney
00:0019:00 PM00:00 AM09:00 AM10:00 AM
01:0020:00 PM01:00 AM10:00 AM11:00 AM
02:0021:00 PM02:00 AM11:00 AM12:00 PM
03:0022:00 PM03:00 AM12:00 PM13:00 PM
04:0023:00 PM04:00 AM13:00 PM14:00 PM
05:0000:00 AM05:00 AM14:00 PM15:00 PM
06:0001:00 AM06:00 AM15:00 PM16:00 PM
07:0002:00 AM07:00 AM16:00 PM17:00 PM
08:0003:00 AM08:00 AM17:00 PM18:00 PM
09:0004:00 AM09:00 AM18:00 PM19:00 PM
10:0005:00 AM10:00 AM19:00 PM20:00 PM
11:0006:00 AM11:00 AM20:00 PM21:00 PM
12:0007:00 AM12:00 PM21:00 PM22:00 PM
13:0008:00 AM13:00 PM22:00 PM23:00 PM
14:0009:00 AM14:00 PM23:00 PM00:00 AM
15:0010:00 AM15:00 PM00:00 AM01:00 AM
16:0011:00 AM16:00 PM01:00 AM02:00 AM
17:0012:00 PM17:00 PM02:00 AM03:00 AM
18:0013:00 PM18:00 PM03:00 AM04:00 AM
19:0014:00 PM19:00 PM04:00 AM05:00 AM
20:0015:00 PM20:00 PM05:00 AM06:00 AM
21:0016:00 PM21:00 PM06:00 AM07:00 AM
22:0017:00 PM22:00 PM07:00 AM08:00 AM
23:0018:00 PM23:00 PM08:00 AM09:00 AM

Frequently asked questions

How does the meeting planner work?
You add cities and define your business hours (e.g., 9 AM - 6 PM). The planner calculates each city's local hour for each UTC hour, then highlights hours where ALL cities are within business hours.
What if there's no overlap?
When cities span >12 hours apart (e.g., LA + Sydney), there may be no true overlap. Try expanding business hours, or accept that some cities will need to take an early or late call.
Does it handle daylight saving time?
Yes — we use current IANA tzdata, so DST shifts are reflected automatically.
How many cities can I compare?
Up to 6 cities. For more, use the world clock at /clock or the API.

Explore more

Meeting planner
4 cities · 0 overlap hours