export declare function compareDates(recordDate: string, buffer: number): boolean;
export declare function epochToDateStringFormat(epoch: number, format?: string): string;
export declare function convertDateCodeToFormat(dateString: string, toFormat: string): string;
/**
 * Current calendar date resolved in Asia/Kolkata (IST).
 *
 * TIMEZONE RULE: IST = UTC + 5:30 (fixed offset, no DST).
 * Converting IST -> UTC: subtract 5:30.
 *   - If IST time < 05:30 -> UTC date is the PREVIOUS calendar day.
 *   - If IST time >= 05:30 -> UTC date is the SAME calendar day.
 *
 * Example: IST 01:00 -> UTC 19:30 (prev day).
 *
 * Why this matters: the production container (node:20.10-alpine) sets no TZ,
 * so it defaults to UTC. A bare `new Date().getDate()` at 01:00 IST would read
 * UTC's date (still "yesterday"), causing classification jobs to target the
 * wrong day or silently miss their trigger window.
 *
 * This function returns a Date whose local getFullYear()/getMonth()/getDate()
 * always equal the IST calendar date, regardless of container timezone.
 */
export declare function getTodayInIST(): Date;