Convert any time between BDT and CST, with a full 24-hour table and the hours when both sides are actually at work.

BDT to CST Time Converter

CST is 11 hours behind BDT. BDT is UTC+6:00, and The US Central states are currently on CDT (UTC-5:00).

Worth knowing right now. The US Central states are currently on CDT, not CST, because daylight saving is in effect. The 11 hours above is the gap between those two regions today, which is almost certainly what you want. Taken strictly as written, BDT to CST is 12 hours.
BDT
Bangladesh Standard Time
08:18:55 PM
Sunday, October 11, 2026
UTC+6:00
-11:00
hours difference
⇆ Reverse
CST
Central Standard Time
09:18:55 AM
Sunday, October 11, 2026
UTC-5:00

Best Time to Call Between BDT and CST

Standard 9-to-5 hours in these two zones never overlap, so someone has to take the call outside their working day. The most workable window is 6:00 PM to 10:00 PM BDT, which is 7:00 AM to 11:00 AM CST.

both at work BDT only CST only neither  —  hours along the strip are BDT.

BDT to CST: Full 24-Hour Conversion Table

Shaded rows are working hours; the darker shade marks the hours when both zones are at work.

BDTCSTWorking hours
12:00 AM 1:00 PM prev day CST only
1:00 AM 2:00 PM prev day CST only
2:00 AM 3:00 PM prev day CST only
3:00 AM 4:00 PM prev day CST only
4:00 AM 5:00 PM prev day —
5:00 AM 6:00 PM prev day —
6:00 AM 7:00 PM prev day —
7:00 AM 8:00 PM prev day —
8:00 AM 9:00 PM prev day —
9:00 AM 10:00 PM prev day BDT only
10:00 AM 11:00 PM prev day BDT only
11:00 AM 12:00 AM BDT only
12:00 PM 1:00 AM BDT only
1:00 PM 2:00 AM BDT only
2:00 PM 3:00 AM BDT only
3:00 PM 4:00 AM BDT only
4:00 PM 5:00 AM BDT only
5:00 PM 6:00 AM —
6:00 PM 7:00 AM —
7:00 PM 8:00 AM —
8:00 PM 9:00 AM CST only
9:00 PM 10:00 AM CST only
10:00 PM 11:00 AM CST only
11:00 PM 12:00 PM CST only

What BDT and CST Actually Are

BDT — Bangladesh Standard Time

Dhaka, Chattogram, Khulna. Standing at UTC+6:00 as written, and the region does not change its clocks, so that offset holds all year. Sometimes written BST, which collides with British Summer Time.

Bangladesh experimented with daylight saving for a single year in 2009 during a power crisis, then abandoned it.

CST — Central Standard Time

Chicago, Houston, Dallas, Mexico City, Winnipeg. Standing at UTC-6:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, November 1, 2026, to CST. CST also stands for China Standard Time (UTC+8) and Cuba Standard Time (UTC-5). This page covers the North American one.

Saskatchewan sits inside the Central zone but never changes its clocks, so it matches CST in winter and its neighbors' MDT in summer.

What This Means in Practice

The date changes mid-working-day

For 2 of the eight hours in a normal BDT working day, the equivalent CST time falls on a different calendar date. Anything scheduled in that stretch needs the date checked as well as the time, or a Tuesday call quietly becomes a Wednesday one at the other end.

This gap is not fixed

CST changes its clocks and BDT does not, so the difference between them moves by an hour twice a year. A recurring meeting set now will drift for one side from Sunday, November 1, 2026 unless someone resets it.

Nearly opposite sides of the clock

At 11 hours apart, one side's morning is the other side's night. Handing work over at the end of a shift usually beats trying to get both parties in the same call.

Frequently Asked Questions

What is the time difference between BDT and CST?

CST is 11 hours behind BDT. That is the live figure. Taken strictly as written, the gap between BDT and CST is 12 hours — the two differ because at least one of these regions is currently on daylight saving.

What is 9:00 AM BDT in CST?

9:00 AM BDT is 10:00 PM the previous day CST.

What are the best hours to schedule a call between BDT and CST?

Standard business hours in these two zones do not overlap at all, so one side has to work outside the 9-to-5. The most workable window is 6:00 PM to 10:00 PM BDT, which is 7:00 AM to 11:00 AM CST.

Does the difference between BDT and CST change during the year?

Yes. CST observes daylight saving and BDT does not, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, November 1, 2026.

Does BDT always mean Bangladesh Standard Time?

Sometimes written BST, which collides with British Summer Time.

Does CST always mean Central Standard Time?

CST also stands for China Standard Time (UTC+8) and Cuba Standard Time (UTC-5). This page covers the North American one.

Converting between two time zones regularly? Bookmark this page — the clocks update live and the table follows daylight saving automatically.