What is the time difference between Dhaka and Kolkata?

Dhaka is 30 minutes ahead of Kolkata during standard time.

When is the best time to schedule a call between Dhaka and Kolkata?

The best times to connect are 10:00 AM GMT+6, 11:00 AM GMT+6, 12:00 PM GMT+6, when both regions are within standard business hours.

Dhaka to Delhi Time Converter — GMT+6 to GMT+5:30, 30 minutes difference

24-Hour Overlap Timeline

✅ Overlap: 10:00 AM–6:00 PM in Dhaka · 9:00 AM–5:00 PM in Delhi (8h window)

	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
UTC →
🇧🇩 Dhaka UTC+6	6a	7a	8a	9a	10a	11a	12p	1p	2p	3p	4p	5p	6p	7p	8p	9p	10p	11p	12a	1a	2a	3a	4a	5a
🇮🇳 Delhi UTC+5:30	5a	6a	7a	8a	9a	10a	11a	12p	1p	2p	3p	4p	5p	6p	7p	8p	9p	10p	11p	12a	1a	2a	3a	4a
🇮🇳 India (IST) UTC+5:30	5a	6a	7a	8a	9a	10a	11a	12p	1p	2p	3p	4p	5p	6p	7p	8p	9p	10p	11p	12a	1a	2a	3a	4a

Both working Working Off hours Sleeping Now

Key Facts: Dhaka (GMT+6) vs Delhi (GMT+5:30)

Time Gap

0h 30m

Dhaka ahead

DST Status

✅ Dhaka

No DST

✅ Kolkata: No DST

Cities in GMT+6

100

Largest: Dhaka

19,134,000 pop.

Overlap Window

8h window

10:00 AM – 6:00 PM (GMT+6)

9:00 AM – 5:00 PM (GMT+5:30)

Find Cities in Dhaka & Kolkata Timezones

The GMT+6 and GMT+5:30 timezones are separated by 30 minutes. Dhaka is the largest city in the Asia/Dhaka zone and Delhi is the largest in Asia/Kolkata. Neither timezone observes daylight saving time, so the difference is constant year-round. For scheduling between these regions, the key fact is: there are 8 hours of mutual business-hours overlap each day.

Best Times to Schedule Calls: Dhaka (GMT+6) ↔ Delhi (GMT+5:30)

Dhaka (GMT+6)	Kolkata (GMT+5:30)	Quality
6:00 AM	5:00 AM	❌
7:00 AM	6:00 AM	❌
8:00 AM	7:00 AM	⚠️
9:00 AM	8:00 AM	⚠️
10:00 AM	9:00 AM	✅
11:00 AM	10:00 AM	✅
12:00 PM	11:00 AM	✅
1:00 PM	12:00 PM	✅
2:00 PM	1:00 PM	✅
3:00 PM	2:00 PM	✅
4:00 PM	3:00 PM	✅
5:00 PM	4:00 PM	✅
6:00 PM	5:00 PM	⚠️
7:00 PM	6:00 PM	⚠️
8:00 PM	7:00 PM	❌
9:00 PM	8:00 PM	❌
10:00 PM	9:00 PM	❌

Work hours defined as 09:00–18:00 local time. ✅ Both in work hours ⚠️ Borderline ❌ Outside work hours.

GMT+6 to GMT+5:30: Complete 24-Hour Time Conversion Table

Dhaka (GMT+6)	Kolkata (GMT+5:30)	IST (UTC+5:30)
12:00 AM	11:30 PM −1	11:30 PM
← Date changes in Kolkata →
1:00 AM	12:30 AM	12:30 AM
2:00 AM	1:30 AM	1:30 AM
3:00 AM	2:30 AM	2:30 AM
4:00 AM	3:30 AM	3:30 AM
5:00 AM	4:30 AM	4:30 AM
6:00 AM	5:30 AM	5:30 AM
7:00 AM	6:30 AM	6:30 AM
8:00 AM	7:30 AM	7:30 AM
9:00 AM	8:30 AM	8:30 AM
10:00 AM	9:30 AM	9:30 AM
11:00 AM	10:30 AM	10:30 AM
12:00 PM	11:30 AM	11:30 AM
1:00 PM	12:30 PM	12:30 PM
2:00 PM	1:30 PM	1:30 PM
3:00 PM	2:30 PM	2:30 PM
4:00 PM	3:30 PM	3:30 PM
5:00 PM	4:30 PM	4:30 PM
6:00 PM	5:30 PM	5:30 PM
7:00 PM	6:30 PM	6:30 PM
8:00 PM	7:30 PM	7:30 PM
9:00 PM	8:30 PM	8:30 PM
10:00 PM	9:30 PM	9:30 PM
11:00 PM	10:30 PM	10:30 PM

IST (India Standard Time, UTC+5:30) shown as reference for Indian users. +1/−1 indicates a different calendar day.

100 Cities in Dhaka (GMT+6) & 600 Cities in Kolkata (GMT+5:30) — Page 1 of 3

Dhaka & 99 more — Dhaka (GMT+6, UTC+6)

Mymensingh, BD Ghulja, CN Aksu, CN Kumul, CN Karamay, CN Sylhet, BD Kuqa, CN Sirajganj, BD Rajshahi, BD Yan'an Beilu, CN Kushtia, BD Barura, BD Bogra, BD Tangail, BD Savar, BD Osh, KG Tungi, BD Hotan, CN Comilla, BD Rangpur, BD Brahmanbaria, BD Feni, BD Siddhirganj, BD Jhenida, BD Companiganj, BD Jessore, BD Banchpar, BD Atushi, CN Bole, CN Nazipur, BD Barishal, BD Chuadanga, BD Cox's Bazar, BD Dinajpur, BD Brahmanpara, BD Pabna, BD Narsingdi, BD Jamalpur, BD Kuytun, CN Fukang, CN Aral, CN Tacheng, CN Naogaon, BD Bhandaria, BD Nawabganj, BD Altay, CN Sripur, BD Maijdi, BD Saidpur, BD Faridpur, BD Fulgazi, BD Thimphu, BT Satkhira, BD Wujiaqu, CN Netrakona, BD Goalundo Ghat, BD Jalal-Abad, KG Bhola, BD Karakol, KG Habiganj, BD Lakshmipur, BD Koktokay, CN Kargilik, CN Manikganj, BD Korgas, CN Kaukhali, BD Karakax, CN Qarqan, CN Patuakhali, BD Panchari Bazar, BD Nakhyaungcharipara, BD Lalmanirhat, BD Pirojpur, BD Arankhola, BD Gaibandha, BD Raharpur, BD Elenga, BD Balykchy, KG Jalakati, BD Tokmok, KG Sherpur, BD Gopalganj, BD Kyzyl-Kyya, KG Sunamganj, BD Gopalpur, BD

Delhi & 599 more — Kolkata (GMT+5:30, UTC+5:30)

Kottarassheri, IN Attadappa, IN Barmhan Kalan, IN Mirzapur, IN Nagpur, IN Ghaziabad, IN Supaul, IN Vadodara, IN Rajkot, IN Vishakhapatnam, IN Indore, IN Thane, IN Bhopal, IN Agra, IN Peyanvilai, IN Pimpri-Chinchwad, IN Patna, IN Bilaspur, IN Ludhiana, IN Madurai, IN Jamshedpur, IN Nasik, IN Vijayawada, IN Faridabad, IN Najafgarh, IN Meerut, IN Jabalpur, IN Kalyan, IN Vasai-Virar, IN Panipat, IN Varanasi, IN Kalleli, IN Srinagar, IN Aurangabad, IN Dhanbad, IN Amritsar, IN Aligarh, IN Guwahati, IN Haora, IN Ranchi, IN Gwalior, IN Chandigarh, IN Jodhpur, IN Raipur, IN Kota, IN Bareilly, IN Coimbatore, IN Solapur, IN Hubli, IN Mysore, IN Trichinopoly, IN Moradabad, IN Tiruppur, IN Gurgaon, IN Jalandhar, IN Bhubaneshwar, IN Narela, IN Bhayandar, IN Karimnagar, IN Patiala, IN Shishgarh, IN Colombo, LK Thiruvananthapuram, IN Durgapur, IN Bhiwandi, IN Bhilwara, IN Saharanpur, IN Warangal, IN Shiliguri, IN Salem, IN Kochi, IN Gorakhpur, IN Guntur, IN Karaikandi, IN Haldwani, IN Dhulia, IN Bhavnagar, IN Noida, IN Bhangar, IN Bhilai, IN Mangalore, IN Bihta, IN Hasanpur, IN Cuttack, IN Salimpur, IN Raurkela, IN Tumkur, IN Dehra Dun, IN Kottayam, IN Asansol, IN Bokaro Steel City, IN Kolhapur, IN Nava Raipur, IN Ajmer, IN Nanded, IN Amravati, IN Nellore, IN Dispur, IN Gulbarga, IN Bikaner, IN Agartala, IN Chanda, IN Loni, IN Ujjain, IN Jhansi, IN Ulhasnagar, IN Jammu, IN Tuticorin, IN Purnea, IN Belgaum, IN Vellore, IN Malegaon, IN Jamnagar, IN Bardoli, IN Gaya, IN Ambattur, IN Jalgaon, IN Chhatarpur, IN Kurnool, IN Udaipur, IN Wapi, IN Chauddagram, BD Mathura, IN Sangli, IN Davangere, IN Calicut, IN Mothihari, IN Akola, IN Bettiah, IN Shorapur, IN Tinnevelly, IN Bellary, IN Bhagalpur, IN Manampizha, IN Delhi Cantonment, IN Salt Lake City, IN Etawa, IN Sonipat, IN Quilon, IN Mulangodi, IN Munro Turuttu, IN Karur, IN Jalna, IN Bairia, IN Bhatpara, IN Sirur, IN Kakinada, IN Panihati, IN Rohtak, IN Maler Kotla, IN Kolga, IN Korba, IN Sikar, IN Sasaram, IN Karnal, IN Brahmapur, IN Ahmadnagar, IN Shahjanpur, IN Avadi, IN Khanapur, IN Cuddapah, IN Alamadi, IN Rajahmundry, IN Alwar, IN Sambalpur, IN Muzaffarpur, IN Kamarhati, IN Campiernagar, IN Bijapur, IN Ratnagiri, IN Jagdalpur, IN Rampur, IN Shimoga, IN Kashipur, IN Junagadh, IN Hapur, IN Pattikad, IN Trichur, IN Barddhaman, IN Panvel, IN Nizamabad, IN Parbhani, IN Hisar, IN Fatehpur, IN Birania, IN

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Convert Dhaka (GMT+6) to Delhi (GMT+5:30) Time — 30 minutes apart