use chrono::{DateTime, FixedOffset, TimeZone, Utc};
pub const IST: FixedOffset = FixedOffset::east_opt(5 * 3600 + 30 * 60).unwrap();
pub fn ist_datetime(year: i32, month: u32, day: u32, hour: u32, minute: u32) -> DateTime<Utc> {
IST.with_ymd_and_hms(year, month, day, hour, minute, 0)
.unwrap()
.with_timezone(&Utc)
}