Fixed Excel Date Offset

Author: carlvoller

Cargo.lock

@@ -3,17 +3,17 @@ members = ["cli-excel-rs", "crates/*", "py-excel-rs"]
 resolver = "2"
 
 [workspace.package]
-version = "0.5.2"
+version = "0.5.3"
 authors = ["Carl Voller"]
 edition = "2021"
 homepage = "https://github.com/carlvoller/excel-rs"
 license = "MIT"
 repository = "https://github.com/carlvoller/excel-rs"
 
 [workspace.dependencies]
-excel-rs-xlsx = { version = "0.5.2", path = "crates/excel-rs-xlsx", default-features = false }
-excel-rs-csv = { version = "0.5.2", path = "crates/excel-rs-csv", default-features = false }
-excel-rs-postgres = { version = "0.5.2", path = "crates/excel-rs-postgres", default-features = false }
+excel-rs-xlsx = { version = "0.5.3", path = "crates/excel-rs-xlsx", default-features = false }
+excel-rs-csv = { version = "0.5.3", path = "crates/excel-rs-csv", default-features = false }
+excel-rs-postgres = { version = "0.5.3", path = "crates/excel-rs-postgres", default-features = false }
 
 [profile.release]
 opt-level = 3

Cargo.toml

@@ -4,7 +4,7 @@ build-backend = "maturin"
 
 [project]
 name = "py-excel-rs"
-version = "0.5.2"
+version = "0.5.3"
 description = "Some performant utility functions to convert common data structures to XLSX"
 dependencies = ["pandas", "numpy"]
 requires-python = ">=3.7"

py-excel-rs/pyproject.toml

@@ -16,6 +16,6 @@ pub fn chrono_to_xlsx_date(date: NaiveDateTime) -> f64 {
     );
     let delta = (date - start_date).num_nanoseconds().unwrap();
 
-    let true_delta: f64 = delta as f64 / NANOSECONDS_IN_A_DAY;
+    let true_delta: f64 = (delta as f64 + NANOSECONDS_IN_A_DAY + NANOSECONDS_IN_A_DAY) / NANOSECONDS_IN_A_DAY;
     return true_delta;
 }