6-7 November 2025
The Faculty of Biology at Sofia University “St. Kliment Ohridski” is proud to announce the International Conference on Natural Sciences & Biotechnology – KLIMENT’S DAYS 2025, to be held on November 6 – 7, 2025, in Sofia, Bulgaria.
Celebrating academic excellence and innovation, ICNSB – KLIMENT’S DAYS 2025 aims to unite leading scientists, researchers, and young scholars from around the world in a vibrant forum dedicated to the advancement of Natural Sciences and Biotechnology. This year’s edition continues a distinguished tradition of interdisciplinary dialogue, cutting-edge discoveries, and meaningful collaboration.
We are also pleased to announce a Satellite Scientific Conference on “Reintroduction of Conservation-Reliant Species”, to be held in conjunction with the main conference. This focused event will provide a platform for experts in Conservation Biology, Ecology, and Wildlife Management to share research, strategies, and best practices addressing the unique challenges of species conservation in the 21st century.
The conference will feature keynote lectures by renowned experts, interactive sessions, poster presentations, and ample opportunities for networking and idea exchange. Whether you’re exploring the frontiers of Molecular Biology, Environmental Science, or Applied Biotechnology, this is the place to connect, share, and inspire.
Join us in shaping the future of science together!
Organising committee: Scientific committee:
Lyuben Zagorchev Miroslava Zhiponova
Zhenya Yordanova Tanya Topouzova – Hristova
Iliana Rasheva Asya Asenova
Atanas Grozdanov Lyubomir Kenderov
Isa Hadjiali Trayana Nedeva
Pavel Videv Stoyan Shishkov
Momchil Paunov Blagoy Uzunov
Denis Gradinarov Albena Lapeva-Gjonova
Nikola Atanasov Hristo Gagov
Eliza Uzunova Plamen Mitov
Anton Hinkov Milen Georgiev
Anita Tosheva Valya Vassileva
Mirela Georgieva Ivan Atanasov
Elitza Tahciiska Anita Tosheva
Iliyana Sazdova Dimitrina Miteva
Petar Eftimov Kamelia Yotovska
Yordan Georgiev Yovana Todorova
Zlatina Zheleva
| Early bird fee (till 15 August 2025) | Standard fee (16 August - 16 October) | Late and on-site fee (after 16 October) | |
|---|---|---|---|
| Regular participant | 100 Euro | 130 Euro | 150 Euro |
| Student / Phd Student | 50 Euro | 75 Euro | 90 Euro |
Registration fees for participants include:
You can register using the “Register Here” button below. Please select the respective language first before proceeding to create a profile and/or register.
Payment of conference fees in Euros (€) must accompany all registration forms. No registration will be confirmed until payment is received. Payment can be made by bank transfer or online using a credit card.
Cancellation policy:
Confirmation letter and invoice
An invoice with a letter of confirmation will be sent to participant on receipt of the respective registration and payment.
We warmly invite researchers to submit abstracts for oral or poster presentations at the International Conference on Natural Sciences and Biotechnology – Kliment’s Days 2025. To ensure consistency in the conference proceedings, all submissions must adhere to the formatting guidelines outlined below. Accepted abstracts, submitted with valid registration, will be included in the official ICNSB – Kliment’s Days 2025 Book of Abstracts.
Important Dates:
Deadline for abstract submission: 31.07.2025, 23:59
Authors will be notified by email of the acceptance status of their abstracts, along with further presentation details, by August 15.
Submission:
Please email your abstract (in .doc or .docx format) to: kliments.days.2025@biofac.uni-sofia.bg
Kindly indicate your preferred presentation type (oral or poster) when submitting.
Abstract Format Guidelines (Template docx file):
Abstracts must be written in English.
Title: All caps, bold, Times New Roman, 14 pt
Authors: Full names in lower case, Times New Roman, 12 pt.
Include full institutional affiliation(s).
Underline the presenting author.
Length: Maximum of 250 words.
Include aim, methods, main results, and conclusions.
Use single spacing and justify the text.
Presentation Policy:
Each registered participant may present one abstract (oral or poster). Co-authorship, however, is not affected by this limit.
Abstracts that do not adhere to these guidelines will be returned for correction.
Each participant will receive an online certificate of participation at the email address provided during registration, within two weeks after the conclusion of the event.
GETTING THERE
Sofia is the capital and largest city of Bulgaria, with the main international gateway being Sofia Airport. It is well connected to major European cities via regular flights operated by national carriers and low-cost airlines.
Sofia has a well-developed public transport and taxi system, and the city center is just a 20-minute drive from the airport.
Organized transfers
The conference organizing company will provide transfers from Sofia Airport to the hotel of your choice and back.
The cost for an individual transfer in one direction is 45 Euro.
Booking and payment can be done through the online system not later than 27 October 2025.
Getting to the venue
g.k. Lozenets, bul. “Dragan Tsankov” 8, 1164 Sofia
PASSPORTS & VISAS
Bulgaria has the European Union’s Common Visa Policy as a member country accepting European citizens freely. All non-EU citizens are required to have a passport to enter the EU with the appropriate visas. Conference attendees are personally responsible for making their own visa arrangements. You can find out more about visas at https://www.mfa.bg/en/services-travel/consular-services/travel-bulgaria/visa-bulgaria.
However, if you need an invitation letter, please send a mail to yakim@cmebg.com.
MONETARY SYSTEM
The national currency is the Bulgarian Lev. Bank notes of the following denominations are in circulation: 5, 10, 20, 50, 100 Levs. 1 Euro = 1,95583 BGN.
There are foreign exchange offices and ATMs everywhere in the city. It’s always prudent to carry a little cash, however, in case you can’t find an ATM or bank office nearby. You can always change cash at the hotel, though the commission will be higher.
Make sure you have enough of the national currency when you plan to visit local markets and shops.
TIPPING
When a gratuity is not included in your bill, which is usually the case, 10% is customary. If service is outstanding, you could go as high as 15%. With taxi drivers, you usually just round up the sum if you have been happy with the ride or for the sake of convenience.
CLIMATE
The climate in Bulgaria is moderate continental with beautiful blooming spring, dry and hot summer, long and pleasant autumn, and mild winter with lots of opportunity for skiing.
In November, Sofia usually has low temperatures and moderate rainfall. Anticipate daytime temperatures around 11°C, while night temperatures can drop to 1°C.
You may check current weather in Sofia HERE.
TIME
Winter time: GMT + 2 hrs. (October through March)
ELECTRICITY
220 Volts, 50 Hz
Bulgaria uses CEE 7/4 (German “Schuko”) power plugs and sockets.
