What is the time difference between Johannesburg and Kolkata?

Kolkata is 3 hours 30 minutes ahead of Johannesburg during standard time.

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

The best times to connect are 9:00 AM GMT+2, 10:00 AM GMT+2, 11:00 AM GMT+2, when both regions are within standard business hours.

Khartoum to Delhi Time Converter — GMT+2 to GMT+5:30, 3 hours 30 minutes difference

24-Hour Overlap Timeline

✅ Overlap: 9:00 AM–3:00 PM in Khartoum · 12:00 PM–6:00 PM in Delhi (6h 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 →
🇸🇩 Khartoum UTC+2	2a	3a	4a	5a	6a	7a	8a	9a	10a	11a	12p	1p	2p	3p	4p	5p	6p	7p	8p	9p	10p	11p	12a	1a
🇮🇳 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: Khartoum (GMT+2) vs Delhi (GMT+5:30)

Time Gap

3h 30m

Kolkata ahead

DST Status

✅ Johannesburg

No DST

✅ Kolkata: No DST

Cities in GMT+2

273

Largest: Khartoum

7,869,000 pop.

Overlap Window

6h window

9:00 AM – 3:00 PM (GMT+2)

12:00 PM – 6:00 PM (GMT+5:30)

Find Cities in Johannesburg & Kolkata Timezones

The GMT+2 and GMT+5:30 timezones are separated by 3 hours 30 minutes. Khartoum is the largest city in the Africa/Johannesburg 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 6 hours of mutual business-hours overlap each day.

Best Times to Schedule Calls: Khartoum (GMT+2) ↔ Delhi (GMT+5:30)

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

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

GMT+2 to GMT+5:30: Complete 24-Hour Time Conversion Table

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

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

273 Cities in Johannesburg (GMT+2) & 600 Cities in Kolkata (GMT+5:30) — Page 1 of 3

Khartoum & 272 more — Johannesburg (GMT+2, UTC+2)

Bukavu, CD Kisangani, CD Matola, MZ Tshikapa, CD Lilongwe, MW Gqeberha, ZA Khartoum North, SD Bunia, CD Pietermaritzburg, ZA Durban, ZA Blantyre, MW Nampula, MZ Uvira, CD Bulawayo, ZW Kitwe, ZM Benghazi, LY Ndola, ZM Port Sudan, SD Kabinda, CD Rustenburg, ZA El Geneina, SD Kassala, SD Beira, MZ Newcastle, ZA El Fasher, SD Likasi, CD Nyala, SD Kaliningrad, RU Kolwezi, CD Katlehong, ZA Juba, SS Zebediela, ZA Windhoek, NA El Obeid, SD Ajdabiya, LY Khayelitsha, ZA Chitungwiza, ZW Gedaref, SD Antonio Enes, MZ Wad Medani, SD Kusti, SD Maseru, LS Randburg, ZA Chipata, ZM Roodepoort, ZA Muhanga, RW Bor, SS Mitchells Plain, ZA Paarl, ZA Mahikeng, ZA Kabwe, ZM East London, ZA Ed Daein, SD Boksburg, ZA Misratah, LY Singa, SD Chingola, ZM Bloemfontein, ZA Germiston, ZA Al Bayda', LY Kurmuk, SD Goma, CD Chimoio, MZ Centurion, ZA Gaborone, BW Beni, CD Mutare, ZW Sandton, ZA Kafue, ZM Ar Ruseris, SD Cidade de Nacala, MZ Al Khums, LY Az Zawiyah, LY Kajo Kaji, SS Mwene-Ditu, CD Malema, MZ Quelimane, MZ Gharyan, LY Klerksdorp, ZA Ed Damazin, SD Yei, SS Isiro, CD Bethelsdorp, ZA Mongu, ZM Kindu, CD Kempton Park, ZA Nqutu, ZA Magwe, SS Al Marj, LY Kroonstad, ZA Wau, SS Benoni, ZA Gweru, ZW George, ZA Kamina, CD Luanshya, ZM Butembo, CD Tete, MZ Al Manaqil, SD Mufulira, ZM Mzuzu, MW Kashikishi, ZM Maridi, SS Nchelenge, ZM Malakal, SS Kalemie, CD Wamba, CD Gandajika, CD Vila Junqueiro, MZ Pinetown, ZA Sannar, SD Lichinga, MZ Pemba, MZ Krugersdorp, ZA Atbara, SD Cacula, AO Tobruk, LY Gitega, BI Ruhengeri, RW Livingstone, ZM Kipushi, CD Polokwane, ZA Mansa, ZM Worcester, ZA Ed Damer, SD Springs, ZA Alberton, ZA Winterveld, ZA Baraka, CD Kwekwe, ZW Parow, ZA Rundu, NA Bwana Mkubwa, ZM Xai-Xai, MZ Kadoma, ZW Sabha, LY Ben Guerir, MA Nkayi, ZW Kasempa, ZM Manzini, SZ Empangeni, ZA Maxixe, MZ Witbank, ZA An Nuhud, SD Ilebo, CD Kongolo, CD Uitenhage, ZA Francistown, BW Walvisbaai, NA Sabratah, LY Al Jumayl, LY Kasama, ZM KwaDukuza, ZA Zomba, MW Mporokoso, ZM Leer, SS Mossel Bay, ZA Vereeniging, ZA Kimberley, ZA Mthatha, ZA Vanderbijlpark, ZA Ruwa, ZW Kadugli, SD Grahamstown, ZA Solwezi, ZM Chinhoyi, ZW Chililabombwe, ZM Masvingo, ZW Darnah, LY Hoopstad, ZA Janzur, LY Gitarama, RW Midrand, ZA Middelburg, ZA Ad Diwem, SD Norton, ZW Luvungi, CD Chirundu, ZM Tshilenge, CD Standerton, ZA Ermelo, ZA Randfontein, ZA Zuwarah, LY Masallatah, LY Cuamba, MZ

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 Khartoum (GMT+2) to Delhi (GMT+5:30) Time — 3 hours 30 minutes apart