Plan around the half hour
Bengaluru’s offset means that London times commonly convert to half-hour local times. A London morning offers a different Indian afternoon window in summer than in winter. Use the exact local end time when checking whether the call fits before a participant’s workday ends.
London, GB: Europe/London (city ID: london).
Bengaluru, IN: Asia/Kolkata (city ID: bengaluru).
Does the difference change?
The destination-minus-source differences sampled on the 15th of each month in 2027 are +4h 30m, +5h 30m. These are dated examples, not a promise of fixed offsets or a complete historical range. A different reference date may have different rules.
| Source date | London | Bengaluru |
|---|---|---|
| 2027-01-16 | 10:00 Greenwich Mean Time | 2027-01-16 · 15:30 Same day · India Standard Time |
| 2027-07-16 | 10:00 British Summer Time | 2027-07-16 · 14:30 Same day · India Standard Time |
Daylight-saving rules depend on the city and date. When a local hour is missing or repeated, the converter rejects it or asks which occurrence you mean. Rules can change politically; reconfirm far-future meetings.