export declare function convertSecondsSinceEpochToDate(secondsSinceEpoch: number): Date;
export declare function convertIsoStringToDate(isoString: string): Date;
export declare function convertDateToTimeString(date: Date): string;
export declare function formatTimestampForDatabase(date: Date): string;
export declare function getDaysAgoTimestamp(daysAgo: number): string;
export declare function getHoursAgoTimestamp(hoursAgo: number): string;
export declare function getMinutesAgoTimestamp(minutesAgo: number): string;