There is no overlap between 09:00–18:00 working days in these two places.
How many hours is UTC behind CHADT?
As abbreviations, CHADT is always 13.75 hours ahead of UTC: UTC is UTC+0 and CHADT is UTC+13:45. To convert, add 13.75 hours.
When the UTC to CHADT time difference changes
For most of the year CHADT is 13.75 hours ahead of UTC. From 4 April to 25 September 2027, CHADT is 12.75 hours ahead of UTC instead, because the two places change their clocks on different dates. Meetings booked by the usual gap land an hour off in those weeks.
Dates
CHADT vs UTC
Length
27 September 2026 to 31 December 2026
13.75 hours ahead
96 days
1 January 2027 to 3 April 2027
13.75 hours ahead
93 days
4 April 2027 to 25 September 2027
12.75 hours ahead
175 days
26 September 2027 to 31 December 2027
13.75 hours ahead
97 days
Calling hours for UTC and CHADT
When CHADT is 13.75 hours ahead of UTC: no shared 09:00 to 17:00 hours; try 07:00 in UTC (20:45 in CHADT).
When CHADT is 12.75 hours ahead of UTC: no shared 09:00 to 17:00 hours; try 07:00 in UTC (19:45 in CHADT).
Frequently asked questions about UTC and CHADT time
How many hours ahead is CHADT of UTC?
CHADT (UTC+13:45) is 13.75 hours ahead of UTC (UTC+0).
Does the time difference between UTC and CHADT change?
Yes. It is usually 13.75 hours ahead, but changes when one side moves its clocks: 12.75 hours ahead from 4 April to 25 September 2027.