Question 1

Does Remindavo work with Bulgarian phone numbers?

Accepted Answer

Yes. Remindavo fully supports Bulgarian phone numbers starting with +359. It works across all three major Bulgarian mobile network operators (MNOs): A1 Bulgaria (formerly Mtel, operating on the 087 prefix range — +359 87 — as a subsidiary of A1 Telekom Austria Group, which also operates A1 Austria, A1 Croatia, A1 Serbia, A1 Slovenia, A1 North Macedonia, and A1 Belarus; A1 Bulgaria is the country's largest MNO by subscriber count), Yettel Bulgaria (formerly Telenor Bulgaria, operating on the 089 prefix range — +359 89 — rebranded to Yettel in April 2022 following PPF Group's acquisition of Telenor's Central and Eastern European mobile assets, including operations that became Yettel Hungary, Yettel Serbia, Yettel North Macedonia, and Yettel Montenegro alongside Yettel Bulgaria), and Vivacom (formerly Bulgarian Telecommunications Company / BTC and its mobile brand Vivatel, operating on the 088 prefix range — +359 88 — now owned by United Group, the South East European cable and mobile operator that also owns Wind Hellas and Nova in Greece, and cable operations across Slovenia, Croatia, and Serbia). MVNOs operating on Bulgarian mobile networks include Lidl Connect Bulgaria (on the A1 Bulgaria network, part of the pan-European Lidl Connect MVNO footprint) and others. Bulgarian mobile numbers use the domestic format 08X-XXX-XXX (where the trunk prefix 0 is replaced by +359 in international format) — for example, 087-123-456 becomes +359 87 123 456. When adding your Bulgarian number to Remindavo, select Bulgaria (+359) and enter without the leading 0 trunk prefix. Remindavo places a test verification call immediately after you save your number to confirm delivery.

Question 2

Is Remindavo compliant with Bulgaria's data protection law (GDPR / CPDP)?

Accepted Answer

Yes. Bulgaria is an EU member state (since January 1, 2007) and applies the EU General Data Protection Regulation (GDPR, Regulation 2016/679) as directly applicable law since May 25, 2018. The Bulgarian data protection supervisory authority is the Commission for Personal Data Protection (CPDP — Комисия за защита на личните данни, abbreviated КЗЛД in Bulgarian), established under the Bulgarian Personal Data Protection Act (Закон за защита на личните данни, ZZLD), which was updated to align with the GDPR requirements. CPDP enforces GDPR rights including the right of access (Article 15), right to rectification (Article 16), right to erasure / right to be forgotten (Article 17), right to restriction of processing (Article 18), right to data portability (Article 20), and right to object (Article 21). Remindavo collects only what is necessary to deliver the service — your calendar event times and phone number — and never sells or shares your personal data with third parties. You can request data deletion at any time at web.remindavo.com/delete-account.

Question 3

What time zone does Remindavo use for Bulgaria?

Accepted Answer

Remindavo uses Eastern European Time (EET, UTC+2) in winter and Eastern European Summer Time (EEST, UTC+3) during daylight saving time, following the EU DST schedule. Clocks in Bulgaria advance one hour on the last Sunday of March and revert on the last Sunday of October. Because both Bulgaria and the UK shift their clocks simultaneously and by the same amount (in the same direction), the offset between Bulgaria and the UK is a constant 2 hours throughout the entire year: in winter, UK is on GMT (UTC+0) and Bulgaria is on EET (UTC+2); in summer, UK is on BST (UTC+1) and Bulgaria is on EEST (UTC+3) — the gap never changes. Bulgaria shares the EET/EEST zone with Romania, Greece, Ukraine, Estonia, Latvia, Lithuania, Finland, and Cyprus. Bulgaria is always 1 hour ahead of Central European countries (Germany, France, Italy, Austria, Hungary, Czech Republic, Poland) which use CET/CEST (UTC+1/UTC+2). When you connect your Google Calendar or Outlook to Remindavo, your calendar already stores event times in UTC, which Remindavo converts to your local EET or EEST automatically. No time zone configuration is needed.

Question 4

Does Remindavo work for business users in Sofia, Plovdiv, Varna, and Burgas?

Accepted Answer

Yes. Remindavo works for any Bulgarian mobile number regardless of location — Sofia (the capital, home to over 1.3 million people in the metro area and Bulgaria's commercial, financial, and administrative centre), Plovdiv (Bulgaria's second-largest city, a Thracian-era city and European Capital of Culture 2019, home to the Plovdiv Tech Hub and Philipopolis, one of Europe's oldest continuously inhabited cities), Varna (Bulgaria's third-largest city and major Black Sea port, economic and tourism hub for the northeastern Black Sea coast, home to significant IT and outsourcing operations), Burgas (major Black Sea port and centre of the Bourgas-Stara Zagora economic region, home to Lukoil Neftochim Bulgaria — the largest oil refinery in Southeast Europe), Stara Zagora (central Bulgarian industrial and agricultural hub, home to the Maritza East coal basin and multiple energy plants), Ruse (Bulgaria's primary Danube river port and gateway to Romania via the Danube Bridge, significant manufacturing and logistics hub), Pleven, Sliven, Dobrich, Shumen, Pazardzhik, Blagoevgrad, and all other Bulgarian cities, towns, and regions. Bulgaria's economy includes IT and business process outsourcing (Telerik — acquired by Progress Software in 2014, VMware / Broadcom Sofia R&D operations, Schwarz IT Bulgaria, Ubisoft Sofia, SAP Labs Bulgaria, HP Bulgaria, VMware Carbon Black, and numerous software and nearshore IT companies), manufacturing (automotive components, food processing), energy (Kozloduy Nuclear Power Plant, wind and solar energy on the Black Sea and Danube Plains), agriculture, and tourism (Black Sea coast resorts including Sunny Beach, Golden Sands, and Albena; ski resorts including Bansko, Pamporovo, and Borovets; UNESCO World Heritage Sites including the Rila Monastery, Boyana Church, Thracian Tomb of Kazanlak, and Madara Rider).

Question 5

Can Remindavo call Bulgarian mobile numbers starting with +359 87, +359 88, or +359 89?

Accepted Answer

Yes. Remindavo supports all current Bulgarian mobile number ranges: +359 87 (A1 Bulgaria, formerly Mtel), +359 88 (Vivacom, formerly BTC/Vivatel), and +359 89 (Yettel, formerly Telenor Bulgaria). Bulgarian mobile numbers are presented domestically with the trunk prefix 0 — 087-XXX-XXX for A1, 088-XXX-XXX for Vivacom, and 089-XXX-XXX for Yettel. When entering your number in Remindavo, select the +359 country code and enter the number without the leading 0 — for example, 089-123-456 becomes +359 89 123 456. The Remindavo verification call fires immediately after you save your number to confirm it can reach you before your first calendar event.

Winter (EET)	UTC+2 — from last Sunday of October to last Sunday of March
Summer (EEST)	UTC+3 — from last Sunday of March to last Sunday of October
vs. UK	Always 2 hours ahead — both shift simultaneously (GMT→EET winter; BST→EEST summer)
vs. Germany / Austria / Hungary	Always 1 hour ahead (they use CET/CEST = UTC+1/UTC+2)
vs. Romania / Greece	Same zone year-round (EET/EEST)
vs. New York (EST)	+7 hours in winter (EET vs. EST); +6 hours in summer (EEST vs. EDT)

Phone Call Reminders in Bulgaria

How it works

Sign in with Google or Microsoft

Add your +359 number

Choose your lead time

Get called before every meeting

Bulgarian carriers fully supported

A1 Bulgaria (ex-Mtel)

Yettel Bulgaria (ex-Telenor)

Vivacom (ex-BTC/Vivatel)

MVNOs supported

Time Zone — EET / EEST (EU DST schedule)

Frequently asked questions — Bulgaria

Does Remindavo work with Bulgarian phone numbers?

Is Remindavo compliant with Bulgaria's GDPR requirements (CPDP / КЗЛД)?

What time zone does Remindavo use for Bulgaria?

Does Remindavo work for business users in Sofia, Plovdiv, Varna, and Burgas?

Does Bulgaria use the euro, or do I pay in Bulgarian Lev (BGN)?

Never miss a meeting in Bulgaria