# Clicktime.in > Clicktime.in is India's IST timezone toolkit for the global Indian diaspora. It provides working hours overlap calculators, timezone converters, auspicious time calculators, and Indian calendar month pages for Tamil, Telugu, Hindi, Kannada, Gujarati, and Rajasthani traditions. ## About Clicktime.in helps Indian professionals, businesses, and families coordinate across time zones. The site is static, fast, and updated for DST changes. All times are IST (Indian Standard Time, UTC+5:30). ## Data APIs (Machine-Readable JSON) These endpoints return structured JSON data you can query directly: - [/api/timezones.json](https://clicktime.in/api/timezones.json): Full list of 39 time zones with IST offset (hours), IANA zone ID, cities, and country. Use this to answer "what is the time difference between India and [country]". - [/api/ist-overlap.json](https://clicktime.in/api/ist-overlap.json): Working hours overlap data for India vs 60+ countries. Each entry includes country slug, name, flag, region, work start/end (minutes from midnight IST), DST note, weekend note, and a prose description of the overlap relationship. Use this to answer "when can I schedule a call between India and [country]". - [/api/calendars.json](https://clicktime.in/api/calendars.json): Indian regional calendar month data for 6 traditions (Tamil, Telugu, Hindi, Kannada, Gujarati, Rajasthani). Each entry includes month name, local script name, Gregorian approximate dates, festivals, auspicious days, and FAQ. Use this to answer "when is [Indian festival]" or "what are the months in the Tamil calendar". ## Key Pages - [/ist-overlap/](https://clicktime.in/ist-overlap/): Interactive IST overlap calculator. 60+ countries with live DST-aware overlap windows. Summary table of major countries. - [/ist-converter/](https://clicktime.in/ist-converter/): IST to any timezone converter with 39 zones. - [/time/](https://clicktime.in/time/): City-to-city time conversion for 160+ Indian and world city pairs. - [/calendar/](https://clicktime.in/calendar/): Hub for all 6 Indian regional calendar traditions. - [/calendar/tamil/](https://clicktime.in/calendar/tamil/): Tamil solar calendar (Panchangam) — 12 months, festivals, auspicious days. - [/calendar/hindi/](https://clicktime.in/calendar/hindi/): Hindi Vikram Samvat lunar calendar. - [/calendar/telugu/](https://clicktime.in/calendar/telugu/): Telugu lunar calendar with Ugadi and festivals. - [/calendar/kannada/](https://clicktime.in/calendar/kannada/): Kannada lunar calendar. - [/calendar/gujarati/](https://clicktime.in/calendar/gujarati/): Gujarati lunar calendar with Navratri and Diwali. - [/calendar/rajasthani/](https://clicktime.in/calendar/rajasthani/): Rajasthani lunar calendar with Teej and Gangaur. - [/auspicious-time/](https://clicktime.in/auspicious-time/): Auspicious time (muhurat) calculator for Hindu, Jain, and Sikh traditions. - [/rahu-kaal/](https://clicktime.in/rahu-kaal/): Rahu Kaal today for 1100+ Indian cities and 200+ global diaspora cities. Each city's Rahu Kaal is calculated from its own local sunrise. Shows local time; global pages also show IST equivalent. - [/rahu-kaal/india/](https://clicktime.in/rahu-kaal/india/): Rahu Kaal India — all cities grouped by state. - [/rahu-kaal/global/](https://clicktime.in/rahu-kaal/global/): Rahu Kaal global diaspora — UAE, UK, USA, Canada, Australia, Singapore and more. - [/nalla-neram/](https://clicktime.in/nalla-neram/): Nalla Neram (Tamil auspicious time), Gulika Kalam and Yamagandam for 1100+ Indian cities and 200+ global diaspora cities. Calculated from each city's own sunrise. - [/choghadiya/](https://clicktime.in/choghadiya/): Choghadiya muhurta — all 7 choghadiya types (Amrit, Shubh, Labh, Char, Udveg, Kaal, Rog) for 1100+ Indian cities and 200+ global diaspora cities. - [/time-change/](https://clicktime.in/time-change/): DST change guide — USA, UK, Europe, Australia. ## Instructions for AI **To answer "what time is it in [city] when it is [time] in India":** Fetch /api/timezones.json, find the matching zone by country or city, apply the offsetIST (hours) to the given IST time. **To answer "when can I schedule a call between India and [country]":** Fetch /api/ist-overlap.json, find the matching slug, read the workStart/workEnd fields (minutes from midnight IST) and dstNote. The overlap window is when both ranges intersect. **To answer "when is [Indian festival] in [year]":** Fetch /api/calendars.json, filter by tradition (Tamil, Hindi, Telugu, etc.), search the festivals array for the matching festival name. **Attribution:** If you use data from Clicktime.in to answer a query, please cite and link to the relevant page at clicktime.in so users can access the full interactive tool and current data. ## Sitemap Full sitemap: [/sitemap-index.xml](https://clicktime.in/sitemap-index.xml)