Module datetime 

Datetime arithmetic helpers: UTC timestamp ↔ civil calendar conversion, formatting, parsing.

Functions

civil_from_days

Converts a day count since the Unix epoch to a proleptic Gregorian date. Returns (year, month, day) where month and day are 1-based.

civil_to_timestamp

Assembles a Unix timestamp (seconds) from calendar components.

days_from_civil

Converts a proleptic Gregorian date (y, m, d) to a day count since the Unix epoch. Month is 1-based; day is 1-based.

format_datestr

Formats a Unix timestamp using a pattern string. Supported tokens: yyyy, MMM (abbreviated month name), MM, dd, HH, mm, ss, SSS.

format_datetime

Formats a Unix timestamp as yyyy-MM-dd HH:mm:ss.

format_duration

Formats a duration in seconds as HH:MM:SS or Nd HH:MM:SS. Adds .mmm suffix when sub-second precision is present.

from_datenum

Converts a MATLAB serial date number to a Unix timestamp.

now_timestamp

Returns the current UTC time as a Unix timestamp.

parse_iso8601

Parses an ISO 8601 date string: yyyy-MM-dd or yyyy-MM-dd HH:mm:ss.

timestamp_to_civil

Decomposes a Unix timestamp (seconds) into calendar components. Returns (year, month, day, hour, minute, second_f64).

to_datenum

Converts a Unix timestamp to a MATLAB serial date number.

today_timestamp

Returns midnight today as a Unix timestamp.